64474811760 has 160 divisors (see below), whose sum is σ = 206098808832. Its totient is φ = 16661376000.

The previous prime is 64474811749. The next prime is 64474811777. The reversal of 64474811760 is 6711847446.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2214417 + ... + 2243343.

Almost surely, 2^64474811760 is an apocalyptic number.

64474811760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64474811760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103049404416).

64474811760 is an abundant number, since it is smaller than the sum of its proper divisors (141623997072).

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

64474811760 is a wasteful number, since it uses less digits than its factorization.

64474811760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29231 (or 29225 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 48.

The spelling of 64474811760 in words is "sixty-four billion, four hundred seventy-four million, eight hundred eleven thousand, seven hundred sixty".