137854776977 has 2 divisors, whose sum is σ = 137854776978. Its totient is φ = 137854776976.

The previous prime is 137854776973. The next prime is 137854776991. The reversal of 137854776977 is 779677458731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137345101201 + 509675776 = 370601^2 + 22576^2 .

It is a cyclic number.

It is not a de Polignac number, because 137854776977 - 2² = 137854776973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 137854776977.

It is not a weakly prime, because it can be changed into another prime (137854776973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68927388488 + 68927388489.

It is an arithmetic number, because the mean of its divisors is an integer number (68927388489).

Almost surely, 2^137854776977 is an apocalyptic number.

It is an amenable number.

137854776977 is a deficient number, since it is larger than the sum of its proper divisors (1).

137854776977 is an equidigital number, since it uses as much as digits as its factorization.

137854776977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435637440, while the sum is 71.

The spelling of 137854776977 in words is "one hundred thirty-seven billion, eight hundred fifty-four million, seven hundred seventy-six thousand, nine hundred seventy-seven".