15557152213 has 2 divisors, whose sum is σ = 15557152214. Its totient is φ = 15557152212.

The previous prime is 15557152187. The next prime is 15557152267. The reversal of 15557152213 is 31225175551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15354431569 + 202720644 = 123913^2 + 14238^2 .

It is an emirp because it is prime and its reverse (31225175551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15557152213 - 2²⁵ = 15523597781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15557152813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7778576106 + 7778576107.

It is an arithmetic number, because the mean of its divisors is an integer number (7778576107).

Almost surely, 2^15557152213 is an apocalyptic number.

It is an amenable number.

15557152213 is a deficient number, since it is larger than the sum of its proper divisors (1).

15557152213 is an equidigital number, since it uses as much as digits as its factorization.

15557152213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52500, while the sum is 37.

The spelling of 15557152213 in words is "fifteen billion, five hundred fifty-seven million, one hundred fifty-two thousand, two hundred thirteen".