61586724815 has 48 divisors (see below), whose sum is σ = 93828668544. Its totient is φ = 38374056000.

The previous prime is 61586724803. The next prime is 61586724841. The reversal of 61586724815 is 51842768516.

It is not a de Polignac number, because 61586724815 - 2³⁰ = 60512982991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8261840 + ... + 8269290.

It is an arithmetic number, because the mean of its divisors is an integer number (1954763928).

Almost surely, 2^61586724815 is an apocalyptic number.

61586724815 is a deficient number, since it is larger than the sum of its proper divisors (32241943729).

61586724815 is a wasteful number, since it uses less digits than its factorization.

61586724815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10548 (or 10541 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 53.

The spelling of 61586724815 in words is "sixty-one billion, five hundred eighty-six million, seven hundred twenty-four thousand, eight hundred fifteen".