521453055215 has 16 divisors (see below), whose sum is σ = 655514985600. Its totient is φ = 397679073792.

The previous prime is 521453055209. The next prime is 521453055239. The reversal of 521453055215 is 512550354125.

It is a cyclic number.

It is not a de Polignac number, because 521453055215 - 2¹⁴ = 521453038831 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, 22749482 + ... + 22772391.

It is an arithmetic number, because the mean of its divisors is an integer number (40969686600).

Almost surely, 2^521453055215 is an apocalyptic number.

521453055215 is a deficient number, since it is larger than the sum of its proper divisors (134061930385).

521453055215 is a wasteful number, since it uses less digits than its factorization.

521453055215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45521986.

The product of its (nonzero) digits is 150000, while the sum is 38.

The spelling of 521453055215 in words is "five hundred twenty-one billion, four hundred fifty-three million, fifty-five thousand, two hundred fifteen".