78777132741 has 16 divisors (see below), whose sum is σ = 116797878720. Its totient is φ = 52477131600.

The previous prime is 78777132727. The next prime is 78777132757. The reversal of 78777132741 is 14723177787.

It is not a de Polignac number, because 78777132741 - 2⁷ = 78777132613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78777132781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1102410 + ... + 1171691.

It is an arithmetic number, because the mean of its divisors is an integer number (7299867420).

Almost surely, 2^78777132741 is an apocalyptic number.

It is an amenable number.

78777132741 is a deficient number, since it is larger than the sum of its proper divisors (38020745979).

78777132741 is a wasteful number, since it uses less digits than its factorization.

78777132741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275393 (or 2275387 counting only the distinct ones).

The product of its digits is 3226944, while the sum is 54.

The spelling of 78777132741 in words is "seventy-eight billion, seven hundred seventy-seven million, one hundred thirty-two thousand, seven hundred forty-one".