61089935580 has 72 divisors (see below), whose sum is σ = 190314432672. Its totient is φ = 15850359936.

The previous prime is 61089935567. The next prime is 61089935581. The reversal of 61089935580 is 8553998016.

It is a happy number.

61089935580 is a `hidden beast` number, since 6 + 1 + 0 + 89 + 9 + 3 + 558 + 0 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61089935581) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4579672 + ... + 4592991.

Almost surely, 2^61089935580 is an apocalyptic number.

61089935580 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61089935580 is an abundant number, since it is smaller than the sum of its proper divisors (129224497092).

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

61089935580 is a wasteful number, since it uses less digits than its factorization.

61089935580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9172715 (or 9172710 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 54.

The spelling of 61089935580 in words is "sixty-one billion, eighty-nine million, nine hundred thirty-five thousand, five hundred eighty".