15240055870872 has 384 divisors, whose sum is σ = 50565723586560. Its totient is φ = 4208082399360.

The previous prime is 15240055870861. The next prime is 15240055870961. The reversal of 15240055870872 is 27807855004251.

It is a happy number.

15240055870872 is a `hidden beast` number, since 1 + 5 + 2 + 4 + 0 + 0 + 558 + 7 + 0 + 87 + 2 = 666.

It is a super-2 number, since 2×15240055870872² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 313408753 + ... + 313457375.

It is an arithmetic number, because the mean of its divisors is an integer number (131681571840).

Almost surely, 2^{15240055870872} is an apocalyptic number.

15240055870872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15240055870872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25282861793280).

15240055870872 is an abundant number, since it is smaller than the sum of its proper divisors (35325667715688).

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

15240055870872 is a wasteful number, since it uses less digits than its factorization.

15240055870872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49425 (or 49409 counting only the distinct ones).

The product of its (nonzero) digits is 6272000, while the sum is 54.

The spelling of 15240055870872 in words is "fifteen trillion, two hundred forty billion, fifty-five million, eight hundred seventy thousand, eight hundred seventy-two".