15222138016 has 12 divisors (see below), whose sum is σ = 29968584282. Its totient is φ = 7611068992.

The previous prime is 15222138007. The next prime is 15222138017. The reversal of 15222138016 is 61083122251.

It can be written as a sum of positive squares in only one way, i.e., 14933817616 + 288320400 = 122204^2 + 16980^2 .

It is not an unprimeable number, because it can be changed into a prime (15222138017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237845875 + ... + 237845938.

Almost surely, 2^15222138016 is an apocalyptic number.

15222138016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15222138016 is a deficient number, since it is larger than the sum of its proper divisors (14746446266).

15222138016 is an equidigital number, since it uses as much as digits as its factorization.

15222138016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475691823 (or 475691815 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 15222138016 in words is "fifteen billion, two hundred twenty-two million, one hundred thirty-eight thousand, sixteen".