61323566072 has 16 divisors (see below), whose sum is σ = 114991606800. Its totient is φ = 30659137600.

The previous prime is 61323565951. The next prime is 61323566089. The reversal of 61323566072 is 27066532316.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230372 + ... + 419187.

It is an arithmetic number, because the mean of its divisors is an integer number (7186975425).

Almost surely, 2^61323566072 is an apocalyptic number.

It is an amenable number.

61323566072 is a deficient number, since it is larger than the sum of its proper divisors (53668040728).

61323566072 is a wasteful number, since it uses less digits than its factorization.

61323566072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661366 (or 661362 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 41.

The spelling of 61323566072 in words is "sixty-one billion, three hundred twenty-three million, five hundred sixty-six thousand, seventy-two".