215306623412 has 12 divisors (see below), whose sum is σ = 396617464320. Its totient is φ = 101987347896.

The previous prime is 215306623409. The next prime is 215306623423. The reversal of 215306623412 is 214326603512.

It is a congruent number.

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, 1416490868 + ... + 1416491019.

It is an arithmetic number, because the mean of its divisors is an integer number (33051455360).

Almost surely, 2^215306623412 is an apocalyptic number.

It is an amenable number.

215306623412 is a deficient number, since it is larger than the sum of its proper divisors (181310840908).

215306623412 is a wasteful number, since it uses less digits than its factorization.

215306623412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832981910 (or 2832981908 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 215306623412 in words is "two hundred fifteen billion, three hundred six million, six hundred twenty-three thousand, four hundred twelve".