15565124412240 has 160 divisors (see below), whose sum is σ = 52155319512576. Its totient is φ = 3817276968960.

The previous prime is 15565124412223. The next prime is 15565124412269. The reversal of 15565124412240 is 4221442156551.

It is a junction number, because it is equal to n+sod(n) for n = 15565124412192 and 15565124412201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8358949 + ... + 10049988.

Almost surely, 2^{15565124412240} is an apocalyptic number.

15565124412240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15565124412240 is an abundant number, since it is smaller than the sum of its proper divisors (36590195100336).

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

15565124412240 is a wasteful number, since it uses less digits than its factorization.

15565124412240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18409237 (or 18409231 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 42.

Adding to 15565124412240 its reverse (4221442156551), we get a palindrome (19786566568791).

The spelling of 15565124412240 in words is "fifteen trillion, five hundred sixty-five billion, one hundred twenty-four million, four hundred twelve thousand, two hundred forty".