15222996856 has 8 divisors (see below), whose sum is σ = 28543119120. Its totient is φ = 7611498424.

The previous prime is 15222996853. The next prime is 15222996881. The reversal of 15222996856 is 65869922251.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 15222996797 and 15222996806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15222996853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 951437296 + ... + 951437311.

It is an arithmetic number, because the mean of its divisors is an integer number (3567889890).

Almost surely, 2^15222996856 is an apocalyptic number.

It is an amenable number.

15222996856 is a deficient number, since it is larger than the sum of its proper divisors (13320122264).

15222996856 is a wasteful number, since it uses less digits than its factorization.

15222996856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902874613 (or 1902874609 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 55.

The spelling of 15222996856 in words is "fifteen billion, two hundred twenty-two million, nine hundred ninety-six thousand, eight hundred fifty-six".