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38487375557 = 414719972691
BaseRepresentation
bin100011110110000001…
…101011111011000101
310200100020210020211222
4203312001223323011
51112310232004212
625403022010125
72531516203001
oct436601537305
9120306706758
1038487375557
11153601359a4
127561416945
133824890007
141c1173d701
151003ce6c72
hex8f606bec5

38487375557 has 8 divisors (see below), whose sum is σ = 40264947072. Its totient is φ = 36749749600.

The previous prime is 38487375523. The next prime is 38487375571. The reversal of 38487375557 is 75557378483.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38487375557 - 210 = 38487374533 is a prime.

It is a super-2 number, since 2×384873755572 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38487375557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38487675557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9984419 + ... + 9988272.

It is an arithmetic number, because the mean of its divisors is an integer number (5033118384).

Almost surely, 238487375557 is an apocalyptic number.

It is an amenable number.

38487375557 is a deficient number, since it is larger than the sum of its proper divisors (1777571515).

38487375557 is a wasteful number, since it uses less digits than its factorization.

38487375557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19972779.

The product of its digits is 98784000, while the sum is 62.

The spelling of 38487375557 in words is "thirty-eight billion, four hundred eighty-seven million, three hundred seventy-five thousand, five hundred fifty-seven".

Divisors: 1 41 47 1927 19972691 818880331 938716477 38487375557