77050921138 has 16 divisors (see below), whose sum is σ = 116264289024. Its totient is φ = 38296834560.

The previous prime is 77050921097. The next prime is 77050921153. The reversal of 77050921138 is 83112905077.

It is a junction number, because it is equal to n+sod(n) for n = 77050921094 and 77050921103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59506 + ... + 397042.

It is an arithmetic number, because the mean of its divisors is an integer number (7266518064).

Almost surely, 2^77050921138 is an apocalyptic number.

77050921138 is a deficient number, since it is larger than the sum of its proper divisors (39213367886).

77050921138 is a wasteful number, since it uses less digits than its factorization.

77050921138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338217.

The product of its (nonzero) digits is 105840, while the sum is 43.

The spelling of 77050921138 in words is "seventy-seven billion, fifty million, nine hundred twenty-one thousand, one hundred thirty-eight".