137274077777 has 2 divisors, whose sum is σ = 137274077778. Its totient is φ = 137274077776.

The previous prime is 137274077741. The next prime is 137274077779. The reversal of 137274077777 is 777770472731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94854144256 + 42419933521 = 307984^2 + 205961^2 .

It is a cyclic number.

It is not a de Polignac number, because 137274077777 - 2¹² = 137274073681 is a prime.

Together with 137274077779, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (137274077779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68637038888 + 68637038889.

It is an arithmetic number, because the mean of its divisors is an integer number (68637038889).

Almost surely, 2^137274077777 is an apocalyptic number.

It is an amenable number.

137274077777 is a deficient number, since it is larger than the sum of its proper divisors (1).

137274077777 is an equidigital number, since it uses as much as digits as its factorization.

137274077777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19765032, while the sum is 59.

The spelling of 137274077777 in words is "one hundred thirty-seven billion, two hundred seventy-four million, seventy-seven thousand, seven hundred seventy-seven".