646295538060 has 72 divisors (see below), whose sum is σ = 2033038325136. Its totient is φ = 172345475520.

The previous prime is 646295538043. The next prime is 646295538071. The reversal of 646295538060 is 60835592646.

646295538060 is a `hidden beast` number, since 6 + 4 + 6 + 2 + 9 + 553 + 80 + 6 + 0 = 666.

646295538060 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 646295537988 and 646295538006.

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, 66486451 + ... + 66496170.

Almost surely, 2^646295538060 is an apocalyptic number.

646295538060 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

646295538060 is an abundant number, since it is smaller than the sum of its proper divisors (1386742787076).

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

646295538060 is a wasteful number, since it uses less digits than its factorization.

646295538060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132982645 (or 132982631 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 54.

It can be divided in two parts, 64629 and 5538060, that added together give a square (5602689 = 2367²).

The spelling of 646295538060 in words is "six hundred forty-six billion, two hundred ninety-five million, five hundred thirty-eight thousand, sixty".