15421934050 has 12 divisors (see below), whose sum is σ = 28684797426. Its totient is φ = 6168773600.

The previous prime is 15421934029. The next prime is 15421934063. The reversal of 15421934050 is 5043912451.

It can be written as a sum of positive squares in 3 ways, for example, as 14067620449 + 1354313601 = 118607^2 + 36801^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15421933997 and 15421934015.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 154219291 + ... + 154219390.

Almost surely, 2^15421934050 is an apocalyptic number.

15421934050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15421934050 is a deficient number, since it is larger than the sum of its proper divisors (13262863376).

15421934050 is a wasteful number, since it uses less digits than its factorization.

15421934050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308438693 (or 308438688 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 15421934050 in words is "fifteen billion, four hundred twenty-one million, nine hundred thirty-four thousand, fifty".