15722255161 has 2 divisors, whose sum is σ = 15722255162. Its totient is φ = 15722255160.

The previous prime is 15722255137. The next prime is 15722255167. The reversal of 15722255161 is 16155222751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14290767936 + 1431487225 = 119544^2 + 37835^2 .

It is a cyclic number.

It is not a de Polignac number, because 15722255161 - 2¹⁵ = 15722222393 is a prime.

It is a super-2 number, since 2×15722255161² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15722255161.

It is not a weakly prime, because it can be changed into another prime (15722255167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7861127580 + 7861127581.

It is an arithmetic number, because the mean of its divisors is an integer number (7861127581).

Almost surely, 2^15722255161 is an apocalyptic number.

It is an amenable number.

15722255161 is a deficient number, since it is larger than the sum of its proper divisors (1).

15722255161 is an equidigital number, since it uses as much as digits as its factorization.

15722255161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42000, while the sum is 37.

The spelling of 15722255161 in words is "fifteen billion, seven hundred twenty-two million, two hundred fifty-five thousand, one hundred sixty-one".