65881762056 has 96 divisors (see below), whose sum is σ = 206100741600. Its totient is φ = 18789803520.

The previous prime is 65881762033. The next prime is 65881762057. The reversal of 65881762056 is 65026718856.

65881762056 is a `hidden beast` number, since 6 + 5 + 8 + 8 + 1 + 7 + 620 + 5 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 65881761993 and 65881762011.

It is not an unprimeable number, because it can be changed into a prime (65881762057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2433126 + ... + 2460053.

It is an arithmetic number, because the mean of its divisors is an integer number (2146882725).

Almost surely, 2^65881762056 is an apocalyptic number.

65881762056 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

65881762056 is an abundant number, since it is smaller than the sum of its proper divisors (140218979544).

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

65881762056 is a wasteful number, since it uses less digits than its factorization.

65881762056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4893219 (or 4893212 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 54.

The spelling of 65881762056 in words is "sixty-five billion, eight hundred eighty-one million, seven hundred sixty-two thousand, fifty-six".