264931215389 has 2 divisors, whose sum is σ = 264931215390. Its totient is φ = 264931215388.

The previous prime is 264931215331. The next prime is 264931215421. The reversal of 264931215389 is 983512139462.

It is a happy number.

264931215389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259734968164 + 5196247225 = 509642^2 + 72085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264931215389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 264931215389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264931215889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132465607694 + 132465607695.

It is an arithmetic number, because the mean of its divisors is an integer number (132465607695).

Almost surely, 2^264931215389 is an apocalyptic number.

It is an amenable number.

264931215389 is a deficient number, since it is larger than the sum of its proper divisors (1).

264931215389 is an equidigital number, since it uses as much as digits as its factorization.

264931215389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2799360, while the sum is 53.

The spelling of 264931215389 in words is "two hundred sixty-four billion, nine hundred thirty-one million, two hundred fifteen thousand, three hundred eighty-nine".