15877330391213 has 2 divisors, whose sum is σ = 15877330391214. Its totient is φ = 15877330391212.

The previous prime is 15877330391171. The next prime is 15877330391227. The reversal of 15877330391213 is 31219303377851.

15877330391213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12724937243209 + 3152393148004 = 3567203^2 + 1775498^2 .

It is an emirp because it is prime and its reverse (31219303377851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15877330391213 - 2¹⁶ = 15877330325677 is a prime.

It is a super-2 number, since 2×15877330391213² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15877330391113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7938665195606 + 7938665195607.

It is an arithmetic number, because the mean of its divisors is an integer number (7938665195607).

Almost surely, 2^{15877330391213} is an apocalyptic number.

It is an amenable number.

15877330391213 is a deficient number, since it is larger than the sum of its proper divisors (1).

15877330391213 is an equidigital number, since it uses as much as digits as its factorization.

15877330391213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2857680, while the sum is 53.

The spelling of 15877330391213 in words is "fifteen trillion, eight hundred seventy-seven billion, three hundred thirty million, three hundred ninety-one thousand, two hundred thirteen".