64234934820 has 96 divisors (see below), whose sum is σ = 228390892800. Its totient is φ = 14682269952.

The previous prime is 64234934747. The next prime is 64234934821. The reversal of 64234934820 is 2843943246.

64234934820 is a `hidden beast` number, since 64 + 23 + 4 + 93 + 482 + 0 = 666.

64234934820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64234934820² (a number of 22 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (64234934821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8492905 + ... + 8500464.

It is an arithmetic number, because the mean of its divisors is an integer number (2379071800).

Almost surely, 2^64234934820 is an apocalyptic number.

64234934820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64234934820 is an abundant number, since it is smaller than the sum of its proper divisors (164155957980).

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

64234934820 is a wasteful number, since it uses less digits than its factorization.

64234934820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16993394 (or 16993386 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 45.

The spelling of 64234934820 in words is "sixty-four billion, two hundred thirty-four million, nine hundred thirty-four thousand, eight hundred twenty".