15222620605664 has 48 divisors (see below), whose sum is σ = 30155663981520. Its totient is φ = 7564092057600.

The previous prime is 15222620605663. The next prime is 15222620605729. The reversal of 15222620605664 is 46650602622251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15222620605663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8415464 + ... + 10063064.

It is an arithmetic number, because the mean of its divisors is an integer number (628242999615).

Almost surely, 2^{15222620605664} is an apocalyptic number.

It is an amenable number.

15222620605664 is a deficient number, since it is larger than the sum of its proper divisors (14933043375856).

15222620605664 is a wasteful number, since it uses less digits than its factorization.

15222620605664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649403 (or 1649395 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 47.

The spelling of 15222620605664 in words is "fifteen trillion, two hundred twenty-two billion, six hundred twenty million, six hundred five thousand, six hundred sixty-four".