156728447222 has 32 divisors (see below), whose sum is σ = 253288802304. Its totient is φ = 72521539200.

The previous prime is 156728447219. The next prime is 156728447237. The reversal of 156728447222 is 222744827651.

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, 7271822 + ... + 7293342.

It is an arithmetic number, because the mean of its divisors is an integer number (7915275072).

Almost surely, 2^156728447222 is an apocalyptic number.

156728447222 is a deficient number, since it is larger than the sum of its proper divisors (96560355082).

156728447222 is a wasteful number, since it uses less digits than its factorization.

156728447222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26684.

The product of its digits is 3010560, while the sum is 50.

The spelling of 156728447222 in words is "one hundred fifty-six billion, seven hundred twenty-eight million, four hundred forty-seven thousand, two hundred twenty-two".