65155855278 has 16 divisors (see below), whose sum is σ = 131601926736. Its totient is φ = 21503582400.

The previous prime is 65155855277. The next prime is 65155855283. The reversal of 65155855278 is 87255855156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65155855277) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 53758351 + ... + 53759562.

It is an arithmetic number, because the mean of its divisors is an integer number (8225120421).

Almost surely, 2^65155855278 is an apocalyptic number.

65155855278 is an abundant number, since it is smaller than the sum of its proper divisors (66446071458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65155855278 is a wasteful number, since it uses less digits than its factorization.

65155855278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107518019.

The product of its digits is 16800000, while the sum is 57.

The spelling of 65155855278 in words is "sixty-five billion, one hundred fifty-five million, eight hundred fifty-five thousand, two hundred seventy-eight".