15415883838261 has 12 divisors (see below), whose sum is σ = 22285506079980. Its totient is φ = 10268893593600.

The previous prime is 15415883838247. The next prime is 15415883838317. The reversal of 15415883838261 is 16283838851451.

It is a happy number.

15415883838261 is a `hidden beast` number, since 1 + 5 + 41 + 5 + 88 + 383 + 82 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14170662187236 + 1245221651025 = 3764394^2 + 1115895^2 .

It is not a de Polignac number, because 15415883838261 - 2¹⁵ = 15415883805493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15415883838161) 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, 696846540 + ... + 696868661.

It is an arithmetic number, because the mean of its divisors is an integer number (1857125506665).

Almost surely, 2^{15415883838261} is an apocalyptic number.

It is an amenable number.

15415883838261 is a deficient number, since it is larger than the sum of its proper divisors (6869622241719).

15415883838261 is a wasteful number, since it uses less digits than its factorization.

15415883838261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393716436 (or 1393716433 counting only the distinct ones).

The product of its digits is 44236800, while the sum is 63.

The spelling of 15415883838261 in words is "fifteen trillion, four hundred fifteen billion, eight hundred eighty-three million, eight hundred thirty-eight thousand, two hundred sixty-one".