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83540942465 = 516708188493
BaseRepresentation
bin100110111001101101…
…1011001111010000001
321222122010000120220012
41031303123121322001
52332042440124330
6102213404154305
76015136203011
oct1156333317201
9258563016805
1083540942465
113247a758612
1214235838995
137b54907c46
144087153c41
15228e2b6c95
hex13736d9e81

83540942465 has 4 divisors (see below), whose sum is σ = 100249130964. Its totient is φ = 66832753968.

The previous prime is 83540942431. The next prime is 83540942473. The reversal of 83540942465 is 56424904538.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34652194801 + 48888747664 = 186151^2 + 221108^2 .

It is a cyclic number.

It is not a de Polignac number, because 83540942465 - 222 = 83536748161 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8354094242 + ... + 8354094251.

It is an arithmetic number, because the mean of its divisors is an integer number (25062282741).

Almost surely, 283540942465 is an apocalyptic number.

It is an amenable number.

83540942465 is a deficient number, since it is larger than the sum of its proper divisors (16708188499).

83540942465 is a wasteful number, since it uses less digits than its factorization.

83540942465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16708188498.

The product of its (nonzero) digits is 4147200, while the sum is 50.

The spelling of 83540942465 in words is "eighty-three billion, five hundred forty million, nine hundred forty-two thousand, four hundred sixty-five".

Divisors: 1 5 16708188493 83540942465