61560505000 has 40 divisors (see below), whose sum is σ = 144236274930. Its totient is φ = 24624200000.

The previous prime is 61560504991. The next prime is 61560505037. The reversal of 61560505000 is 50506516.

It can be written as a sum of positive squares in 5 ways, for example, as 9872164 + 61550632836 = 3142^2 + 248094^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 61560505000.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6151051 + ... + 6161050.

Almost surely, 2^61560505000 is an apocalyptic number.

It is an amenable number.

61560505000 is an abundant number, since it is smaller than the sum of its proper divisors (82675769930).

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

61560505000 is a wasteful number, since it uses less digits than its factorization.

61560505000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12312127 (or 12312108 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The spelling of 61560505000 in words is "sixty-one billion, five hundred sixty million, five hundred five thousand".