7920076779 has 8 divisors (see below), whose sum is σ = 11733447120. Its totient is φ = 5280051168.

The previous prime is 7920076777. The next prime is 7920076811. The reversal of 7920076779 is 9776700297.

It is not a de Polignac number, because 7920076779 - 2¹ = 7920076777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7920076777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146668062 + ... + 146668115.

It is an arithmetic number, because the mean of its divisors is an integer number (1466680890).

Almost surely, 2^7920076779 is an apocalyptic number.

7920076779 is a deficient number, since it is larger than the sum of its proper divisors (3813370341).

7920076779 is a wasteful number, since it uses less digits than its factorization.

7920076779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293336186 (or 293336180 counting only the distinct ones).

The product of its (nonzero) digits is 2333772, while the sum is 54.

The square root of 7920076779 is about 88994.8132140295. The cubic root of 7920076779 is about 1993.3174280680.

The spelling of 7920076779 in words is "seven billion, nine hundred twenty million, seventy-six thousand, seven hundred seventy-nine".