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57897151489 = 471231854287
BaseRepresentation
bin110101111010111100…
…000110110000000001
312112102221201000220001
4311322330012300001
51422033132321424
642333024520001
74116513445012
oct657274066001
9175387630801
1057897151489
1122610483931
12b279780001
1355c8bb2928
142b334a5009
15178cd26844
hexd7af06c01

57897151489 has 4 divisors (see below), whose sum is σ = 59129005824. Its totient is φ = 56665297156.

The previous prime is 57897151483. The next prime is 57897151531. The reversal of 57897151489 is 98415179875.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-57897151489 is a prime.

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 57897151489.

It is not an unprimeable number, because it can be changed into a prime (57897151483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 615927097 + ... + 615927190.

It is an arithmetic number, because the mean of its divisors is an integer number (14782251456).

Almost surely, 257897151489 is an apocalyptic number.

It is an amenable number.

57897151489 is a deficient number, since it is larger than the sum of its proper divisors (1231854335).

57897151489 is a wasteful number, since it uses less digits than its factorization.

57897151489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231854334.

The product of its digits is 25401600, while the sum is 64.

The spelling of 57897151489 in words is "fifty-seven billion, eight hundred ninety-seven million, one hundred fifty-one thousand, four hundred eighty-nine".

Divisors: 1 47 1231854287 57897151489