15912218142 has 48 divisors (see below), whose sum is σ = 34920299232. Its totient is φ = 5236070400.

The previous prime is 15912218137. The next prime is 15912218149. The reversal of 15912218142 is 24181221951.

15912218142 is a `hidden beast` number, since 1 + 591 + 2 + 21 + 8 + 1 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 15912218097 and 15912218106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15912218149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 688783 + ... + 711509.

It is an arithmetic number, because the mean of its divisors is an integer number (727506234).

Almost surely, 2^15912218142 is an apocalyptic number.

15912218142 is an abundant number, since it is smaller than the sum of its proper divisors (19008081090).

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

15912218142 is a wasteful number, since it uses less digits than its factorization.

15912218142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23233 (or 23230 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The spelling of 15912218142 in words is "fifteen billion, nine hundred twelve million, two hundred eighteen thousand, one hundred forty-two".