61552655164 has 72 divisors (see below), whose sum is σ = 147209913648. Its totient is φ = 22136808960.

The previous prime is 61552655141. The next prime is 61552655173. The reversal of 61552655164 is 46155625516.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1070029 + ... + 1126084.

It is an arithmetic number, because the mean of its divisors is an integer number (2044582134).

Almost surely, 2^61552655164 is an apocalyptic number.

It is an amenable number.

61552655164 is an abundant number, since it is smaller than the sum of its proper divisors (85657258484).

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

61552655164 is a wasteful number, since it uses less digits than its factorization.

61552655164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196155 (or 2196146 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 46.

The spelling of 61552655164 in words is "sixty-one billion, five hundred fifty-two million, six hundred fifty-five thousand, one hundred sixty-four".