15552042421545 has 48 divisors (see below), whose sum is σ = 30823361412480. Its totient is φ = 7105926811392.

The previous prime is 15552042421523. The next prime is 15552042421547. The reversal of 15552042421545 is 54512424025551.

15552042421545 is a `hidden beast` number, since 1 + 5 + 5 + 5 + 2 + 0 + 424 + 215 + 4 + 5 = 666.

It is not a de Polignac number, because 15552042421545 - 2¹¹ = 15552042419497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 15552042421545.

It is not an unprimeable number, because it can be changed into a prime (15552042421547) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11797740 + ... + 13049549.

It is an arithmetic number, because the mean of its divisors is an integer number (642153362760).

Almost surely, 2^{15552042421545} is an apocalyptic number.

15552042421545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15552042421545 is a deficient number, since it is larger than the sum of its proper divisors (15271318990935).

15552042421545 is a wasteful number, since it uses less digits than its factorization.

15552042421545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24849294 (or 24849291 counting only the distinct ones).

The product of its (nonzero) digits is 1600000, while the sum is 45.

The spelling of 15552042421545 in words is "fifteen trillion, five hundred fifty-two billion, forty-two million, four hundred twenty-one thousand, five hundred forty-five".