61506601567623 has 12 divisors (see below), whose sum is σ = 89913264943320. Its totient is φ = 40510372116336.

The previous prime is 61506601567573. The next prime is 61506601567637. The reversal of 61506601567623 is 32676510660516.

61506601567623 is a `hidden beast` number, since 6 + 1 + 5 + 0 + 6 + 6 + 0 + 1 + 5 + 6 + 7 + 623 = 666.

It is not a de Polignac number, because 61506601567623 - 2¹² = 61506601563527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61506601567623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61506601567823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41169076608 + ... + 41169078101.

It is an arithmetic number, because the mean of its divisors is an integer number (7492772078610).

Almost surely, 2^{61506601567623} is an apocalyptic number.

61506601567623 is a deficient number, since it is larger than the sum of its proper divisors (28406663375697).

61506601567623 is a wasteful number, since it uses less digits than its factorization.

61506601567623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82338154798 (or 82338154795 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 54.

The spelling of 61506601567623 in words is "sixty-one trillion, five hundred six billion, six hundred one million, five hundred sixty-seven thousand, six hundred twenty-three".