137880319777 has 2 divisors, whose sum is σ = 137880319778. Its totient is φ = 137880319776.

The previous prime is 137880319763. The next prime is 137880319793. The reversal of 137880319777 is 777913088731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77241749776 + 60638570001 = 277924^2 + 246249^2 .

It is a cyclic number.

It is not a de Polignac number, because 137880319777 - 2²⁷ = 137746102049 is a prime.

It is not a weakly prime, because it can be changed into another prime (137880619777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68940159888 + 68940159889.

It is an arithmetic number, because the mean of its divisors is an integer number (68940159889).

Almost surely, 2^137880319777 is an apocalyptic number.

It is an amenable number.

137880319777 is a deficient number, since it is larger than the sum of its proper divisors (1).

137880319777 is an equidigital number, since it uses as much as digits as its factorization.

137880319777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12446784, while the sum is 61.

The spelling of 137880319777 in words is "one hundred thirty-seven billion, eight hundred eighty million, three hundred nineteen thousand, seven hundred seventy-seven".