64705626137040 has 160 divisors (see below), whose sum is σ = 229400570447616. Its totient is φ = 14779678003200.

The previous prime is 64705626136951. The next prime is 64705626137051. The reversal of 64705626137040 is 4073162650746.

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, 10812661 + ... + 15694740.

Almost surely, 2^{64705626137040} is an apocalyptic number.

64705626137040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64705626137040 is an abundant number, since it is smaller than the sum of its proper divisors (164694944310576).

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

64705626137040 is a wasteful number, since it uses less digits than its factorization.

64705626137040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26508877 (or 26508871 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 51.

Adding to 64705626137040 its reverse (4073162650746), we get a palindrome (68778788787786).

The spelling of 64705626137040 in words is "sixty-four trillion, seven hundred five billion, six hundred twenty-six million, one hundred thirty-seven thousand, forty".