64734149832 has 32 divisors (see below), whose sum is σ = 176547682080. Its totient is φ = 19616408960.

The previous prime is 64734149813. The next prime is 64734149849. The reversal of 64734149832 is 23894143746.

It is a happy number.

64734149832 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122602293 + ... + 122602820.

It is an arithmetic number, because the mean of its divisors is an integer number (5517115065).

Almost surely, 2^64734149832 is an apocalyptic number.

It is an amenable number.

64734149832 is an abundant number, since it is smaller than the sum of its proper divisors (111813532248).

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

64734149832 is a wasteful number, since it uses less digits than its factorization.

64734149832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245205133 (or 245205129 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 51.

The spelling of 64734149832 in words is "sixty-four billion, seven hundred thirty-four million, one hundred forty-nine thousand, eight hundred thirty-two".