64797740460 has 72 divisors (see below), whose sum is σ = 196790695920. Its totient is φ = 17258514048.

The previous prime is 64797740453. The next prime is 64797740461. The reversal of 64797740460 is 6404779746.

64797740460 is a `hidden beast` number, since 6 + 4 + 79 + 77 + 40 + 460 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 64797740397 and 64797740406.

It is not an unprimeable number, because it can be changed into a prime (64797740461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67902 + ... + 366341.

It is an arithmetic number, because the mean of its divisors is an integer number (2733204110).

Almost surely, 2^64797740460 is an apocalyptic number.

64797740460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64797740460 is an abundant number, since it is smaller than the sum of its proper divisors (131992955460).

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

64797740460 is a wasteful number, since it uses less digits than its factorization.

64797740460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435087 (or 435082 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 54.

The spelling of 64797740460 in words is "sixty-four billion, seven hundred ninety-seven million, seven hundred forty thousand, four hundred sixty".