61628117576 has 16 divisors (see below), whose sum is σ = 117180224640. Its totient is φ = 30380057680.

The previous prime is 61628117557. The next prime is 61628117609. The reversal of 61628117576 is 67571182616.

It is a happy number.

It is a super-2 number, since 2×61628117576² (a number of 22 digits) contains 22 as substring.

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, 54249536 + ... + 54250671.

It is an arithmetic number, because the mean of its divisors is an integer number (7323764040).

Almost surely, 2^61628117576 is an apocalyptic number.

It is an amenable number.

61628117576 is a deficient number, since it is larger than the sum of its proper divisors (55552107064).

61628117576 is a wasteful number, since it uses less digits than its factorization.

61628117576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108500284 (or 108500280 counting only the distinct ones).

The product of its digits is 846720, while the sum is 50.

The spelling of 61628117576 in words is "sixty-one billion, six hundred twenty-eight million, one hundred seventeen thousand, five hundred seventy-six".