137638777766 has 32 divisors (see below), whose sum is σ = 241256558592. Its totient is φ = 57673539360.

The previous prime is 137638777733. The next prime is 137638777831. The reversal of 137638777766 is 667777836731.

It is a junction number, because it is equal to n+sod(n) for n = 137638777696 and 137638777705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339926 + ... + 625161.

It is an arithmetic number, because the mean of its divisors is an integer number (7539267456).

Almost surely, 2^137638777766 is an apocalyptic number.

137638777766 is a deficient number, since it is larger than the sum of its proper divisors (103617780826).

137638777766 is a wasteful number, since it uses less digits than its factorization.

137638777766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965324.

The product of its digits is 261382464, while the sum is 68.

The spelling of 137638777766 in words is "one hundred thirty-seven billion, six hundred thirty-eight million, seven hundred seventy-seven thousand, seven hundred sixty-six".