65479625820 has 72 divisors (see below), whose sum is σ = 226996040544. Its totient is φ = 14966771328.

The previous prime is 65479625803. The next prime is 65479625839. The reversal of 65479625820 is 2852697456.

65479625820 is a `hidden beast` number, since 6 + 5 + 4 + 7 + 9 + 625 + 8 + 2 + 0 = 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, 25982719 + ... + 25985238.

Almost surely, 2^65479625820 is an apocalyptic number.

65479625820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65479625820 is an abundant number, since it is smaller than the sum of its proper divisors (161516414724).

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

65479625820 is a wasteful number, since it uses less digits than its factorization.

65479625820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51967979 (or 51967974 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 65479625820 in words is "sixty-five billion, four hundred seventy-nine million, six hundred twenty-five thousand, eight hundred twenty".