15745424550 has 48 divisors (see below), whose sum is σ = 39130352640. Its totient is φ = 4189995040.

The previous prime is 15745424549. The next prime is 15745424581. The reversal of 15745424550 is 5542454751.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37722 + ... + 181421.

It is an arithmetic number, because the mean of its divisors is an integer number (815215680).

Almost surely, 2^15745424550 is an apocalyptic number.

15745424550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15745424550 is an abundant number, since it is smaller than the sum of its proper divisors (23384928090).

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

15745424550 is a wasteful number, since it uses less digits than its factorization.

15745424550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219637 (or 219632 counting only the distinct ones).

The product of its (nonzero) digits is 560000, while the sum is 42.

The spelling of 15745424550 in words is "fifteen billion, seven hundred forty-five million, four hundred twenty-four thousand, five hundred fifty".