61343607264 has 48 divisors (see below), whose sum is σ = 161039945808. Its totient is φ = 20446221312.

The previous prime is 61343607239. The next prime is 61343607277. The reversal of 61343607264 is 46270634316.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1986954 + ... + 2017590.

It is an arithmetic number, because the mean of its divisors is an integer number (3354998871).

Almost surely, 2^61343607264 is an apocalyptic number.

It is an amenable number.

61343607264 is an abundant number, since it is smaller than the sum of its proper divisors (99696338544).

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

61343607264 is a wasteful number, since it uses less digits than its factorization.

61343607264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51507 (or 51499 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 42.

The spelling of 61343607264 in words is "sixty-one billion, three hundred forty-three million, six hundred seven thousand, two hundred sixty-four".