15542216368 has 40 divisors (see below), whose sum is σ = 35254306080. Its totient is φ = 6498485760.

The previous prime is 15542216341. The next prime is 15542216381. The reversal of 15542216368 is 86361224551.

It is a super-2 number, since 2×15542216368² (a number of 21 digits) contains 22 as substring.

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, 1687723 + ... + 1696906.

It is an arithmetic number, because the mean of its divisors is an integer number (881357652).

Almost surely, 2^15542216368 is an apocalyptic number.

It is an amenable number.

15542216368 is an abundant number, since it is smaller than the sum of its proper divisors (19712089712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15542216368 is a wasteful number, since it uses less digits than its factorization.

15542216368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384685 (or 3384679 counting only the distinct ones).

The product of its digits is 345600, while the sum is 43.

The spelling of 15542216368 in words is "fifteen billion, five hundred forty-two million, two hundred sixteen thousand, three hundred sixty-eight".