215321429944 has 32 divisors (see below), whose sum is σ = 404478860400. Its totient is φ = 107460587520.

The previous prime is 215321429929. The next prime is 215321429951. The reversal of 215321429944 is 449924123512.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 215321429894 and 215321429903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10213174 + ... + 10234234.

Almost surely, 2^215321429944 is an apocalyptic number.

It is an amenable number.

215321429944 is a deficient number, since it is larger than the sum of its proper divisors (189157430456).

215321429944 is a wasteful number, since it uses less digits than its factorization.

215321429944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23383 (or 23379 counting only the distinct ones).

The product of its digits is 622080, while the sum is 46.

The spelling of 215321429944 in words is "two hundred fifteen billion, three hundred twenty-one million, four hundred twenty-nine thousand, nine hundred forty-four".