61044630560 has 48 divisors (see below), whose sum is σ = 148115736216. Its totient is φ = 23757907968.

The previous prime is 61044630547. The next prime is 61044630601. The reversal of 61044630560 is 6503644016.

It can be written as a sum of positive squares in 4 ways, for example, as 50271020944 + 10773609616 = 224212^2 + 103796^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61044630560.

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, 5149877 + ... + 5161716.

Almost surely, 2^61044630560 is an apocalyptic number.

It is an amenable number.

61044630560 is an abundant number, since it is smaller than the sum of its proper divisors (87071105656).

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

61044630560 is a wasteful number, since it uses less digits than its factorization.

61044630560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10311645 (or 10311637 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 61044630560 in words is "sixty-one billion, forty-four million, six hundred thirty thousand, five hundred sixty".