27267157121 has 2 divisors, whose sum is σ = 27267157122. Its totient is φ = 27267157120.

The previous prime is 27267157111. The next prime is 27267157201. The reversal of 27267157121 is 12175176272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17046958096 + 10220199025 = 130564^2 + 101095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27267157121 is a prime.

It is a super-2 number, since 2×27267157121² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27267157111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13633578560 + 13633578561.

It is an arithmetic number, because the mean of its divisors is an integer number (13633578561).

Almost surely, 2^27267157121 is an apocalyptic number.

It is an amenable number.

27267157121 is a deficient number, since it is larger than the sum of its proper divisors (1).

27267157121 is an equidigital number, since it uses as much as digits as its factorization.

27267157121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82320, while the sum is 41.

The spelling of 27267157121 in words is "twenty-seven billion, two hundred sixty-seven million, one hundred fifty-seven thousand, one hundred twenty-one".