61623251080864 has 72 divisors (see below), whose sum is σ = 140371145449920. Its totient is φ = 26536328184960.

The previous prime is 61623251080841. The next prime is 61623251080879. The reversal of 61623251080864 is 46808015232616.

It is a super-2 number, since 2×61623251080864² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 418744744 + ... + 418891879.

It is an arithmetic number, because the mean of its divisors is an integer number (1949599242360).

Almost surely, 2^{61623251080864} is an apocalyptic number.

It is an amenable number.

61623251080864 is an abundant number, since it is smaller than the sum of its proper divisors (78747894369056).

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

61623251080864 is a wasteful number, since it uses less digits than its factorization.

61623251080864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837636674 (or 837636655 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 52.

The spelling of 61623251080864 in words is "sixty-one trillion, six hundred twenty-three billion, two hundred fifty-one million, eighty thousand, eight hundred sixty-four".