53212111515 has 32 divisors (see below), whose sum is σ = 94633381440. Its totient is φ = 28369571328.

The previous prime is 53212111483. The next prime is 53212111543. The reversal of 53212111515 is 51511121235.

It is a happy number.

53212111515 is a `hidden beast` number, since 5 + 32 + 1 + 2 + 111 + 515 = 666.

It is not a de Polignac number, because 53212111515 - 2⁵ = 53212111483 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 312889 + ... + 452021.

It is an arithmetic number, because the mean of its divisors is an integer number (2957293170).

Almost surely, 2^53212111515 is an apocalyptic number.

53212111515 is a deficient number, since it is larger than the sum of its proper divisors (41421269925).

53212111515 is a wasteful number, since it uses less digits than its factorization.

53212111515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141980 (or 141974 counting only the distinct ones).

The product of its digits is 1500, while the sum is 27.

The spelling of 53212111515 in words is "fifty-three billion, two hundred twelve million, one hundred eleven thousand, five hundred fifteen".