83655251565 has 64 divisors (see below), whose sum is σ = 139411968000. Its totient is φ = 42797424384.

The previous prime is 83655251557. The next prime is 83655251579. The reversal of 83655251565 is 56515255638.

It is not a de Polignac number, because 83655251565 - 2³ = 83655251557 is a prime.

It is a super-2 number, since 2×83655251565² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 49237086 + ... + 49238784.

It is an arithmetic number, because the mean of its divisors is an integer number (2178312000).

Almost surely, 2^83655251565 is an apocalyptic number.

It is an amenable number.

83655251565 is a deficient number, since it is larger than the sum of its proper divisors (55756716435).

83655251565 is a wasteful number, since it uses less digits than its factorization.

83655251565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2946.

The product of its digits is 5400000, while the sum is 51.

The spelling of 83655251565 in words is "eighty-three billion, six hundred fifty-five million, two hundred fifty-one thousand, five hundred sixty-five".