15421022434 has 16 divisors (see below), whose sum is σ = 23274718848. Its totient is φ = 7662819472.

The previous prime is 15421022423. The next prime is 15421022437. The reversal of 15421022434 is 43422012451.

It is not an unprimeable number, because it can be changed into a prime (15421022437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1005129 + ... + 1020355.

It is an arithmetic number, because the mean of its divisors is an integer number (1454669928).

Almost surely, 2^15421022434 is an apocalyptic number.

15421022434 is a deficient number, since it is larger than the sum of its proper divisors (7853696414).

15421022434 is a wasteful number, since it uses less digits than its factorization.

15421022434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18329.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 15421022434 its reverse (43422012451), we get a palindrome (58843034885).

The spelling of 15421022434 in words is "fifteen billion, four hundred twenty-one million, twenty-two thousand, four hundred thirty-four".