15870412213 has 2 divisors, whose sum is σ = 15870412214. Its totient is φ = 15870412212.

The previous prime is 15870412199. The next prime is 15870412219. The reversal of 15870412213 is 31221407851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12029263684 + 3841148529 = 109678^2 + 61977^2 .

It is a cyclic number.

It is not a de Polignac number, because 15870412213 - 2³³ = 7280477621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15870412219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7935206106 + 7935206107.

It is an arithmetic number, because the mean of its divisors is an integer number (7935206107).

Almost surely, 2^15870412213 is an apocalyptic number.

It is an amenable number.

15870412213 is a deficient number, since it is larger than the sum of its proper divisors (1).

15870412213 is an equidigital number, since it uses as much as digits as its factorization.

15870412213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 34.

The spelling of 15870412213 in words is "fifteen billion, eight hundred seventy million, four hundred twelve thousand, two hundred thirteen".