15131055454442 has 16 divisors (see below), whose sum is σ = 23143838769792. Its totient is φ = 7417897021200.

The previous prime is 15131055454423. The next prime is 15131055454451. The reversal of 15131055454442 is 24445455013151.

It is a junction number, because it is equal to n+sod(n) for n = 15131055454393 and 15131055454402.

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, 363601598 + ... + 363643209.

It is an arithmetic number, because the mean of its divisors is an integer number (1446489923112).

Almost surely, 2^{15131055454442} is an apocalyptic number.

15131055454442 is a deficient number, since it is larger than the sum of its proper divisors (8012783315350).

15131055454442 is a wasteful number, since it uses less digits than its factorization.

15131055454442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727245013.

The product of its (nonzero) digits is 960000, while the sum is 44.

The spelling of 15131055454442 in words is "fifteen trillion, one hundred thirty-one billion, fifty-five million, four hundred fifty-four thousand, four hundred forty-two".