77982338651511 has 32 divisors (see below), whose sum is σ = 121508544890880. Its totient is φ = 43559312345856.

The previous prime is 77982338651473. The next prime is 77982338651521. The reversal of 77982338651511 is 11515683328977.

It is not a de Polignac number, because 77982338651511 - 2⁹ = 77982338650999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77982338651521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48033076 + ... + 49630041.

It is an arithmetic number, because the mean of its divisors is an integer number (3797142027840).

Almost surely, 2^{77982338651511} is an apocalyptic number.

77982338651511 is a deficient number, since it is larger than the sum of its proper divisors (43526206239369).

77982338651511 is a wasteful number, since it uses less digits than its factorization.

77982338651511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97663983.

The product of its digits is 76204800, while the sum is 66.

The spelling of 77982338651511 in words is "seventy-seven trillion, nine hundred eighty-two billion, three hundred thirty-eight million, six hundred fifty-one thousand, five hundred eleven".