61621751110761 has 48 divisors (see below), whose sum is σ = 92234557209600. Its totient is φ = 39620146011264.

The previous prime is 61621751110741. The next prime is 61621751110877. The reversal of 61621751110761 is 16701115712616.

61621751110761 is a `hidden beast` number, since 6 + 1 + 6 + 21 + 7 + 511 + 107 + 6 + 1 = 666.

It is not a de Polignac number, because 61621751110761 - 2³⁰ = 61620677368937 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61621751110741) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15197835 + ... + 18820671.

It is an arithmetic number, because the mean of its divisors is an integer number (1921553275200).

Almost surely, 2^{61621751110761} is an apocalyptic number.

It is an amenable number.

61621751110761 is a deficient number, since it is larger than the sum of its proper divisors (30612806098839).

61621751110761 is a wasteful number, since it uses less digits than its factorization.

61621751110761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3623478 (or 3623475 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 45.

The spelling of 61621751110761 in words is "sixty-one trillion, six hundred twenty-one billion, seven hundred fifty-one million, one hundred ten thousand, seven hundred sixty-one".