77379711075 has 72 divisors (see below), whose sum is σ = 143809976128. Its totient is φ = 41245886880.

The previous prime is 77379711029. The next prime is 77379711083. The reversal of 77379711075 is 57011797377.

It is a happy number.

It is not a de Polignac number, because 77379711075 - 2¹¹ = 77379709027 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 19213212 + ... + 19217238.

Almost surely, 2^77379711075 is an apocalyptic number.

77379711075 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

77379711075 is a deficient number, since it is larger than the sum of its proper divisors (66430265053).

77379711075 is a wasteful number, since it uses less digits than its factorization.

77379711075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7215 (or 7198 counting only the distinct ones).

The product of its (nonzero) digits is 2268945, while the sum is 54.

The spelling of 77379711075 in words is "seventy-seven billion, three hundred seventy-nine million, seven hundred eleven thousand, seventy-five".