661051150600 has 48 divisors (see below), whose sum is σ = 1627352399700. Its totient is φ = 248866314240.

The previous prime is 661051150589. The next prime is 661051150621. The reversal of 661051150600 is 6051150166.

It can be written as a sum of positive squares in 6 ways, for example, as 204942722436 + 456108428164 = 452706^2 + 675358^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97210005 + ... + 97216804.

Almost surely, 2^661051150600 is an apocalyptic number.

It is an amenable number.

661051150600 is an abundant number, since it is smaller than the sum of its proper divisors (966301249100).

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

661051150600 is a wasteful number, since it uses less digits than its factorization.

661051150600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194426842 (or 194426833 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 661051150600 in words is "six hundred sixty-one billion, fifty-one million, one hundred fifty thousand, six hundred".