61536435164 has 12 divisors (see below), whose sum is σ = 107742166224. Its totient is φ = 30752959104.

The previous prime is 61536435137. The next prime is 61536435221. The reversal of 61536435164 is 46153463516.

It is a congruent number.

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, 3805544 + ... + 3821679.

It is an arithmetic number, because the mean of its divisors is an integer number (8978513852).

Almost surely, 2^61536435164 is an apocalyptic number.

It is an amenable number.

61536435164 is a deficient number, since it is larger than the sum of its proper divisors (46205731060).

61536435164 is a wasteful number, since it uses less digits than its factorization.

61536435164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7629244 (or 7629242 counting only the distinct ones).

The product of its digits is 777600, while the sum is 44.

The spelling of 61536435164 in words is "sixty-one billion, five hundred thirty-six million, four hundred thirty-five thousand, one hundred sixty-four".