27477542267377 has 2 divisors, whose sum is σ = 27477542267378. Its totient is φ = 27477542267376.

The previous prime is 27477542267311. The next prime is 27477542267423. The reversal of 27477542267377 is 77376224577472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14206559567281 + 13270982700096 = 3769159^2 + 3642936^2 .

It is a cyclic number.

It is not a de Polignac number, because 27477542267377 - 2¹⁵ = 27477542234609 is a prime.

It is not a weakly prime, because it can be changed into another prime (27477542267477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13738771133688 + 13738771133689.

It is an arithmetic number, because the mean of its divisors is an integer number (13738771133689).

Almost surely, 2^{27477542267377} is an apocalyptic number.

It is an amenable number.

27477542267377 is a deficient number, since it is larger than the sum of its proper divisors (1).

27477542267377 is an equidigital number, since it uses as much as digits as its factorization.

27477542267377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1355316480, while the sum is 70.

The spelling of 27477542267377 in words is "twenty-seven trillion, four hundred seventy-seven billion, five hundred forty-two million, two hundred sixty-seven thousand, three hundred seventy-seven".