61313306880 has 144 divisors (see below), whose sum is σ = 223793668224. Its totient is φ = 14014464000.

The previous prime is 61313306783. The next prime is 61313306893. The reversal of 61313306880 is 8860331316.

It is a super-2 number, since 2×61313306880² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1113621 + ... + 1167380.

It is an arithmetic number, because the mean of its divisors is an integer number (1554122696).

Almost surely, 2^61313306880 is an apocalyptic number.

61313306880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61313306880 is an abundant number, since it is smaller than the sum of its proper divisors (162480361344).

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

61313306880 is a wasteful number, since it uses less digits than its factorization.

61313306880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281032 (or 2281018 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 61313306880 in words is "sixty-one billion, three hundred thirteen million, three hundred six thousand, eight hundred eighty".