61461855160 has 64 divisors (see below), whose sum is σ = 139388169600. Its totient is φ = 24389600256.

The previous prime is 61461855151. The next prime is 61461855163. The reversal of 61461855160 is 6155816416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61461855163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12431649 + ... + 12436591.

It is an arithmetic number, because the mean of its divisors is an integer number (2177940150).

Almost surely, 2^61461855160 is an apocalyptic number.

It is an amenable number.

61461855160 is an abundant number, since it is smaller than the sum of its proper divisors (77926314440).

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

61461855160 is a wasteful number, since it uses less digits than its factorization.

61461855160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7360 (or 7356 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 61461855160 in words is "sixty-one billion, four hundred sixty-one million, eight hundred fifty-five thousand, one hundred sixty".