264025015139 has 4 divisors (see below), whose sum is σ = 264081714024. Its totient is φ = 263968316256.

The previous prime is 264025015123. The next prime is 264025015153. The reversal of 264025015139 is 931510520462.

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 264025015139 - 2⁴ = 264025015123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264025015939) 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, 28342457 + ... + 28351770.

It is an arithmetic number, because the mean of its divisors is an integer number (66020428506).

Almost surely, 2^264025015139 is an apocalyptic number.

264025015139 is a deficient number, since it is larger than the sum of its proper divisors (56698885).

264025015139 is an equidigital number, since it uses as much as digits as its factorization.

264025015139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56698884.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 264025015139 in words is "two hundred sixty-four billion, twenty-five million, fifteen thousand, one hundred thirty-nine".