27121612151497 has 2 divisors, whose sum is σ = 27121612151498. Its totient is φ = 27121612151496.

The previous prime is 27121612151443. The next prime is 27121612151537. The reversal of 27121612151497 is 79415121612172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22155952554121 + 4965659597376 = 4707011^2 + 2228376^2 .

It is a cyclic number.

It is not a de Polignac number, because 27121612151497 - 2⁷ = 27121612151369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27121612151497.

It is not a weakly prime, because it can be changed into another prime (27121612151407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13560806075748 + 13560806075749.

It is an arithmetic number, because the mean of its divisors is an integer number (13560806075749).

Almost surely, 2^{27121612151497} is an apocalyptic number.

It is an amenable number.

27121612151497 is a deficient number, since it is larger than the sum of its proper divisors (1).

27121612151497 is an equidigital number, since it uses as much as digits as its factorization.

27121612151497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 49.

The spelling of 27121612151497 in words is "twenty-seven trillion, one hundred twenty-one billion, six hundred twelve million, one hundred fifty-one thousand, four hundred ninety-seven".