61642055502 has 48 divisors (see below), whose sum is σ = 134802150912. Its totient is φ = 20356436880.

The previous prime is 61642055491. The next prime is 61642055513. The reversal of 61642055502 is 20555024616.

61642055502 is a `hidden beast` number, since 6 + 1 + 642 + 0 + 5 + 5 + 5 + 0 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (61642055491) and next prime (61642055513).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1409773 + ... + 1452839.

It is an arithmetic number, because the mean of its divisors is an integer number (2808378144).

Almost surely, 2^61642055502 is an apocalyptic number.

61642055502 is an abundant number, since it is smaller than the sum of its proper divisors (73160095410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61642055502 is a wasteful number, since it uses less digits than its factorization.

61642055502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43813 (or 43810 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 61642055502 in words is "sixty-one billion, six hundred forty-two million, fifty-five thousand, five hundred two".