64758040740 has 72 divisors (see below), whose sum is σ = 196479174528. Its totient is φ = 17264727360.

The previous prime is 64758040693. The next prime is 64758040757. The reversal of 64758040740 is 4704085746.

64758040740 is a `hidden beast` number, since 64 + 7 + 580 + 4 + 0 + 7 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 763035 + ... + 843645.

It is an arithmetic number, because the mean of its divisors is an integer number (2728877424).

Almost surely, 2^64758040740 is an apocalyptic number.

64758040740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64758040740 is an abundant number, since it is smaller than the sum of its proper divisors (131721133788).

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

64758040740 is a wasteful number, since it uses less digits than its factorization.

64758040740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85089 (or 85084 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The spelling of 64758040740 in words is "sixty-four billion, seven hundred fifty-eight million, forty thousand, seven hundred forty".