15220783398 has 16 divisors (see below), whose sum is σ = 30494332080. Its totient is φ = 5064800256.

The previous prime is 15220783373. The next prime is 15220783447. The reversal of 15220783398 is 89338702251.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2194803 + ... + 2201726.

It is an arithmetic number, because the mean of its divisors is an integer number (1905895755).

Almost surely, 2^15220783398 is an apocalyptic number.

15220783398 is an abundant number, since it is smaller than the sum of its proper divisors (15273548682).

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

15220783398 is a wasteful number, since it uses less digits than its factorization.

15220783398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4397111.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 15220783398 in words is "fifteen billion, two hundred twenty million, seven hundred eighty-three thousand, three hundred ninety-eight".