15421022050 has 24 divisors (see below), whose sum is σ = 32780687616. Its totient is φ = 5287207440.

The previous prime is 15421021981. The next prime is 15421022051. The reversal of 15421022050 is 5022012451.

It is not an unprimeable number, because it can be changed into a prime (15421022051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22029682 + ... + 22030381.

It is an arithmetic number, because the mean of its divisors is an integer number (1365861984).

Almost surely, 2^15421022050 is an apocalyptic number.

15421022050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15421022050 is an abundant number, since it is smaller than the sum of its proper divisors (17359665566).

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

15421022050 is a wasteful number, since it uses less digits than its factorization.

15421022050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44060082 (or 44060077 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The spelling of 15421022050 in words is "fifteen billion, four hundred twenty-one million, twenty-two thousand, fifty".