61551165052 has 24 divisors (see below), whose sum is σ = 116413112592. Its totient is φ = 28307126400.

The previous prime is 61551165029. The next prime is 61551165083. The reversal of 61551165052 is 25056115516.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 2091574 + ... + 2120797.

It is an arithmetic number, because the mean of its divisors is an integer number (4850546358).

Almost surely, 2^61551165052 is an apocalyptic number.

It is an amenable number.

61551165052 is a deficient number, since it is larger than the sum of its proper divisors (54861947540).

61551165052 is a wasteful number, since it uses less digits than its factorization.

61551165052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4212669 (or 4212667 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 37.

The spelling of 61551165052 in words is "sixty-one billion, five hundred fifty-one million, one hundred sixty-five thousand, fifty-two".