15220816840441 has 4 divisors (see below), whose sum is σ = 15404200175952. Its totient is φ = 15037433504932.

The previous prime is 15220816840433. The next prime is 15220816840447. The reversal of 15220816840441 is 14404861802251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15220816840441 - 2³ = 15220816840433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15220816840391 and 15220816840400.

It is not an unprimeable number, because it can be changed into a prime (15220816840447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91691667631 + ... + 91691667796.

It is an arithmetic number, because the mean of its divisors is an integer number (3851050043988).

Almost surely, 2^{15220816840441} is an apocalyptic number.

It is an amenable number.

15220816840441 is a deficient number, since it is larger than the sum of its proper divisors (183383335511).

15220816840441 is an equidigital number, since it uses as much as digits as its factorization.

15220816840441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183383335510.

The product of its (nonzero) digits is 491520, while the sum is 46.

The spelling of 15220816840441 in words is "fifteen trillion, two hundred twenty billion, eight hundred sixteen million, eight hundred forty thousand, four hundred forty-one".