14711021521 has 9 divisors (see below), whose sum is σ = 17113808649. Its totient is φ = 12608719284.

The previous prime is 14711021447. The next prime is 14711021531. The reversal of 14711021521 is 12512011741.

It is a happy number.

The square root of 14711021521 is 121289.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 14711021521 - 2¹⁵ = 14710988753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (14711021531) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 840360 + ... + 857686.

Almost surely, 2^14711021521 is an apocalyptic number.

14711021521 is the 121289-th square number.

14711021521 is the 60645-th centered octagonal number.

It is an amenable number.

14711021521 is a deficient number, since it is larger than the sum of its proper divisors (2402787128).

14711021521 is an frugal number, since it uses more digits than its factorization.

14711021521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34668 (or 17334 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 25.

Multiplying 14711021521 by its sum of digits (25), we get a square (367775538025 = 606445²).

The spelling of 14711021521 in words is "fourteen billion, seven hundred eleven million, twenty-one thousand, five hundred twenty-one".