15500540430 has 64 divisors (see below), whose sum is σ = 41349830400. Its totient is φ = 4131972000.

The previous prime is 15500540399. The next prime is 15500540479. The reversal of 15500540430 is 3404500551.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 15500540394 and 15500540403.

It is a congruent number.

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, 868941 + ... + 886599.

It is an arithmetic number, because the mean of its divisors is an integer number (646091100).

Almost surely, 2^15500540430 is an apocalyptic number.

15500540430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15500540430 is an abundant number, since it is smaller than the sum of its proper divisors (25849289970).

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

15500540430 is a wasteful number, since it uses less digits than its factorization.

15500540430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20926 (or 20920 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The spelling of 15500540430 in words is "fifteen billion, five hundred million, five hundred forty thousand, four hundred thirty".