215253331504 has 20 divisors (see below), whose sum is σ = 421182573840. Its totient is φ = 106561054400.

The previous prime is 215253331493. The next prime is 215253331583. The reversal of 215253331504 is 405133352512.

It is a self number, because there is not a number n which added to its sum of digits gives 215253331504.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66599044 + ... + 66602275.

It is an arithmetic number, because the mean of its divisors is an integer number (21059128692).

Almost surely, 2^215253331504 is an apocalyptic number.

It is an amenable number.

215253331504 is a deficient number, since it is larger than the sum of its proper divisors (205929242336).

215253331504 is a wasteful number, since it uses less digits than its factorization.

215253331504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133201428 (or 133201422 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 34.

The spelling of 215253331504 in words is "two hundred fifteen billion, two hundred fifty-three million, three hundred thirty-one thousand, five hundred four".