61461571624 has 16 divisors (see below), whose sum is σ = 115243077600. Its totient is φ = 30730084272.

The previous prime is 61461571607. The next prime is 61461571637. The reversal of 61461571624 is 42617516416.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 634629 + ... + 725035.

It is an arithmetic number, because the mean of its divisors is an integer number (7202692350).

Almost surely, 2^61461571624 is an apocalyptic number.

It is an amenable number.

61461571624 is a deficient number, since it is larger than the sum of its proper divisors (53781505976).

61461571624 is a wasteful number, since it uses less digits than its factorization.

61461571624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175392 (or 175388 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The spelling of 61461571624 in words is "sixty-one billion, four hundred sixty-one million, five hundred seventy-one thousand, six hundred twenty-four".