15213408980845 has 8 divisors (see below), whose sum is σ = 18256145888376. Its totient is φ = 12170690443776.

The previous prime is 15213408980831. The next prime is 15213408980849. The reversal of 15213408980845 is 54808980431251.

It can be written as a sum of positive squares in 4 ways, for example, as 31304578761 + 15182104402084 = 176931^2 + 3896422^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15213408980845 - 2¹⁵ = 15213408948077 is a prime.

It is a super-3 number, since 3×15213408980845³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15213408980845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15213408980849) 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, 2699772 + ... + 6141301.

It is an arithmetic number, because the mean of its divisors is an integer number (2282018236047).

Almost surely, 2^{15213408980845} is an apocalyptic number.

It is an amenable number.

15213408980845 is a deficient number, since it is larger than the sum of its proper divisors (3042736907531).

15213408980845 is an equidigital number, since it uses as much as digits as its factorization.

15213408980845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9185231.

The product of its (nonzero) digits is 11059200, while the sum is 58.

The spelling of 15213408980845 in words is "fifteen trillion, two hundred thirteen billion, four hundred eight million, nine hundred eighty thousand, eight hundred forty-five".