15941885413 has 2 divisors, whose sum is σ = 15941885414. Its totient is φ = 15941885412.

The previous prime is 15941885411. The next prime is 15941885431. The reversal of 15941885413 is 31458814951.

Together with next prime (15941885431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14732376129 + 1209509284 = 121377^2 + 34778^2 .

It is a cyclic number.

It is not a de Polignac number, because 15941885413 - 2¹ = 15941885411 is a prime.

Together with 15941885411, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15941885411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7970942706 + 7970942707.

It is an arithmetic number, because the mean of its divisors is an integer number (7970942707).

Almost surely, 2^15941885413 is an apocalyptic number.

It is an amenable number.

15941885413 is a deficient number, since it is larger than the sum of its proper divisors (1).

15941885413 is an equidigital number, since it uses as much as digits as its factorization.

15941885413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 691200, while the sum is 49.

The spelling of 15941885413 in words is "fifteen billion, nine hundred forty-one million, eight hundred eighty-five thousand, four hundred thirteen".