8971621495 has 16 divisors (see below), whose sum is σ = 11698145280. Its totient is φ = 6580202400.

The previous prime is 8971621487. The next prime is 8971621501. The reversal of 8971621495 is 5941261798.

It is not a de Polignac number, because 8971621495 - 2³ = 8971621487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1520251 + ... + 1526140.

It is an arithmetic number, because the mean of its divisors is an integer number (731134080).

Almost surely, 2^8971621495 is an apocalyptic number.

8971621495 is a deficient number, since it is larger than the sum of its proper divisors (2726523785).

8971621495 is a wasteful number, since it uses less digits than its factorization.

8971621495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046446.

The product of its digits is 1088640, while the sum is 52.

The square root of 8971621495 is about 94718.6438617023. The cubic root of 8971621495 is about 2077.8952370682.

The spelling of 8971621495 in words is "eight billion, nine hundred seventy-one million, six hundred twenty-one thousand, four hundred ninety-five".