61601516560611 has 56 divisors (see below), whose sum is σ = 93398813377760. Its totient is φ = 40607330282496.

The previous prime is 61601516560543. The next prime is 61601516560657. The reversal of 61601516560611 is 11606561510616.

61601516560611 is a `hidden beast` number, since 6 + 1 + 6 + 0 + 15 + 16 + 5 + 6 + 0 + 611 = 666.

It is not a de Polignac number, because 61601516560611 - 2⁹ = 61601516560099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61601516560691) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 37901571 + ... + 39493443.

Almost surely, 2^{61601516560611} is an apocalyptic number.

61601516560611 is a deficient number, since it is larger than the sum of its proper divisors (31797296817149).

61601516560611 is a wasteful number, since it uses less digits than its factorization.

61601516560611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592487 (or 1592472 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The spelling of 61601516560611 in words is "sixty-one trillion, six hundred one billion, five hundred sixteen million, five hundred sixty thousand, six hundred eleven".