21467270467715 has 16 divisors (see below), whose sum is σ = 25829231201280. Its totient is φ = 17128147165920.

The previous prime is 21467270467693. The next prime is 21467270467717. The reversal of 21467270467715 is 51776407276412.

It is a de Polignac number, because none of the positive numbers 2^k-21467270467715 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21467270467717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127917710 + ... + 128085420.

It is an arithmetic number, because the mean of its divisors is an integer number (1614326950080).

Almost surely, 2^{21467270467715} is an apocalyptic number.

21467270467715 is a deficient number, since it is larger than the sum of its proper divisors (4361960733565).

21467270467715 is a wasteful number, since it uses less digits than its factorization.

21467270467715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235642.

The product of its (nonzero) digits is 27659520, while the sum is 59.

The spelling of 21467270467715 in words is "twenty-one trillion, four hundred sixty-seven billion, two hundred seventy million, four hundred sixty-seven thousand, seven hundred fifteen".