61005594512220 has 96 divisors (see below), whose sum is σ = 176328972804096. Its totient is φ = 15743100172800.

The previous prime is 61005594512113. The next prime is 61005594512281. The reversal of 61005594512220 is 2221549550016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117499432 + ... + 118017488.

It is an arithmetic number, because the mean of its divisors is an integer number (1836760133376).

Almost surely, 2^{61005594512220} is an apocalyptic number.

61005594512220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61005594512220 is an abundant number, since it is smaller than the sum of its proper divisors (115323378291876).

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

61005594512220 is a wasteful number, since it uses less digits than its factorization.

61005594512220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581411 (or 581409 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 61005594512220 in words is "sixty-one trillion, five billion, five hundred ninety-four million, five hundred twelve thousand, two hundred twenty".