64211129931 has 8 divisors (see below), whose sum is σ = 92200596880. Its totient is φ = 39514541472.

The previous prime is 64211129833. The next prime is 64211129933. The reversal of 64211129931 is 13992111246.

64211129931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64211129931 - 2⁹ = 64211129419 is a prime.

It is a super-2 number, since 2×64211129931² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1646439229 = 64211129931 / (6 + 4 + 2 + 1 + 1 + 1 + 2 + 9 + 9 + 3 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64211129931.

It is not an unprimeable number, because it can be changed into a prime (64211129933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 823219576 + ... + 823219653.

It is an arithmetic number, because the mean of its divisors is an integer number (11525074610).

Almost surely, 2^64211129931 is an apocalyptic number.

64211129931 is a deficient number, since it is larger than the sum of its proper divisors (27989466949).

64211129931 is a wasteful number, since it uses less digits than its factorization.

64211129931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646439245.

The product of its digits is 23328, while the sum is 39.

The spelling of 64211129931 in words is "sixty-four billion, two hundred eleven million, one hundred twenty-nine thousand, nine hundred thirty-one".