61472657718 has 48 divisors (see below), whose sum is σ = 135238474800. Its totient is φ = 20176123968.

The previous prime is 61472657663. The next prime is 61472657731. The reversal of 61472657718 is 81775627416.

61472657718 is a `hidden beast` number, since 6 + 1 + 47 + 26 + 577 + 1 + 8 = 666.

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, 3064096 + ... + 3084092.

It is an arithmetic number, because the mean of its divisors is an integer number (2817468225).

Almost surely, 2^61472657718 is an apocalyptic number.

61472657718 is an abundant number, since it is smaller than the sum of its proper divisors (73765817082).

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

61472657718 is a wasteful number, since it uses less digits than its factorization.

61472657718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22621 (or 22618 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 54.

The spelling of 61472657718 in words is "sixty-one billion, four hundred seventy-two million, six hundred fifty-seven thousand, seven hundred eighteen".