64126334940 has 48 divisors (see below), whose sum is σ = 189003937920. Its totient is φ = 16200336960.

The previous prime is 64126334929. The next prime is 64126334957. The reversal of 64126334940 is 4943362146.

It is a super-2 number, since 2×64126334940² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64126334892 and 64126334901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28124446 + ... + 28126725.

It is an arithmetic number, because the mean of its divisors is an integer number (3937582040).

Almost surely, 2^64126334940 is an apocalyptic number.

64126334940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64126334940 is an abundant number, since it is smaller than the sum of its proper divisors (124877602980).

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

64126334940 is a wasteful number, since it uses less digits than its factorization.

64126334940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56251202 (or 56251200 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 42.

The spelling of 64126334940 in words is "sixty-four billion, one hundred twenty-six million, three hundred thirty-four thousand, nine hundred forty".