61723565000 has 40 divisors (see below), whose sum is σ = 144618324510. Its totient is φ = 24689424000.

The previous prime is 61723564999. The next prime is 61723565041. The reversal of 61723565000 is 56532716.

It can be written as a sum of positive squares in 5 ways, for example, as 2369937124 + 59353627876 = 48682^2 + 243626^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6167357 + ... + 6177356.

Almost surely, 2^61723565000 is an apocalyptic number.

It is an amenable number.

61723565000 is an abundant number, since it is smaller than the sum of its proper divisors (82894759510).

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

61723565000 is a wasteful number, since it uses less digits than its factorization.

61723565000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12344739 (or 12344720 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 35.

The spelling of 61723565000 in words is "sixty-one billion, seven hundred twenty-three million, five hundred sixty-five thousand".