15504544242 has 48 divisors (see below), whose sum is σ = 36717688800. Its totient is φ = 4689297600.

The previous prime is 15504544219. The next prime is 15504544247. The reversal of 15504544242 is 24244540551.

15504544242 is a `hidden beast` number, since 1 + 550 + 45 + 44 + 24 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 15504544197 and 15504544206.

It is not an unprimeable number, because it can be changed into a prime (15504544247) 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, 28009 + ... + 178307.

It is an arithmetic number, because the mean of its divisors is an integer number (764951850).

Almost surely, 2^15504544242 is an apocalyptic number.

15504544242 is an abundant number, since it is smaller than the sum of its proper divisors (21213144558).

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

15504544242 is a wasteful number, since it uses less digits than its factorization.

15504544242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150839 (or 150836 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 36.

The spelling of 15504544242 in words is "fifteen billion, five hundred four million, five hundred forty-four thousand, two hundred forty-two".