15684068571013 has 2 divisors, whose sum is σ = 15684068571014. Its totient is φ = 15684068571012.

The previous prime is 15684068570869. The next prime is 15684068571037. The reversal of 15684068571013 is 31017586048651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12328258590244 + 3355809980769 = 3511162^2 + 1831887^2 .

It is a cyclic number.

It is not a de Polignac number, because 15684068571013 - 2²⁹ = 15683531700101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15684068572013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7842034285506 + 7842034285507.

It is an arithmetic number, because the mean of its divisors is an integer number (7842034285507).

Almost surely, 2^{15684068571013} is an apocalyptic number.

It is an amenable number.

15684068571013 is a deficient number, since it is larger than the sum of its proper divisors (1).

15684068571013 is an equidigital number, since it uses as much as digits as its factorization.

15684068571013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 15684068571013 in words is "fifteen trillion, six hundred eighty-four billion, sixty-eight million, five hundred seventy-one thousand, thirteen".