61588947774815 has 16 divisors (see below), whose sum is σ = 75479550271488. Its totient is φ = 48222625402656.

The previous prime is 61588947774803. The next prime is 61588947774833. The reversal of 61588947774815 is 51847774988516.

It is a cyclic number.

It is not a de Polignac number, because 61588947774815 - 2⁸ = 61588947774559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61588947774815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74200484 + ... + 75025926.

It is an arithmetic number, because the mean of its divisors is an integer number (4717471891968).

Almost surely, 2^{61588947774815} is an apocalyptic number.

61588947774815 is a deficient number, since it is larger than the sum of its proper divisors (13890602496673).

61588947774815 is a wasteful number, since it uses less digits than its factorization.

61588947774815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142998.

The product of its digits is 3793305600, while the sum is 80.

The spelling of 61588947774815 in words is "sixty-one trillion, five hundred eighty-eight billion, nine hundred forty-seven million, seven hundred seventy-four thousand, eight hundred fifteen".