15506926640250 has 64 divisors (see below), whose sum is σ = 40388127586560. Its totient is φ = 3955389979200.

The previous prime is 15506926640239. The next prime is 15506926640269. The reversal of 15506926640250 is 5204662960551.

It is a junction number, because it is equal to n+sod(n) for n = 15506926640193 and 15506926640202.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 449458885 + ... + 449493384.

It is an arithmetic number, because the mean of its divisors is an integer number (631064493540).

Almost surely, 2^{15506926640250} is an apocalyptic number.

15506926640250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15506926640250 is an abundant number, since it is smaller than the sum of its proper divisors (24881200946310).

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

15506926640250 is a wasteful number, since it uses less digits than its factorization.

15506926640250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898952312 (or 898952302 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 51.

The spelling of 15506926640250 in words is "fifteen trillion, five hundred six billion, nine hundred twenty-six million, six hundred forty thousand, two hundred fifty".