64464062505031 has 4 divisors (see below), whose sum is σ = 73673214291472. Its totient is φ = 55254910718592.

The previous prime is 64464062504939. The next prime is 64464062505043. The reversal of 64464062505031 is 13050526046446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64464062505031 - 2²⁷ = 64463928287303 is a prime.

It is a super-2 number, since 2×64464062505031² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64464062505431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4604575893210 + ... + 4604575893223.

It is an arithmetic number, because the mean of its divisors is an integer number (18418303572868).

Almost surely, 2^{64464062505031} is an apocalyptic number.

64464062505031 is a deficient number, since it is larger than the sum of its proper divisors (9209151786441).

64464062505031 is an equidigital number, since it uses as much as digits as its factorization.

64464062505031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9209151786440.

The product of its (nonzero) digits is 2073600, while the sum is 46.

The spelling of 64464062505031 in words is "sixty-four trillion, four hundred sixty-four billion, sixty-two million, five hundred five thousand, thirty-one".