77946022207 has 4 divisors (see below), whose sum is σ = 77975900640. Its totient is φ = 77916143776.

The previous prime is 77946022181. The next prime is 77946022243. The reversal of 77946022207 is 70222064977.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77946022207 - 2¹⁹ = 77945497919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77946022277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14935303 + ... + 14940520.

It is an arithmetic number, because the mean of its divisors is an integer number (19493975160).

Almost surely, 2^77946022207 is an apocalyptic number.

77946022207 is a deficient number, since it is larger than the sum of its proper divisors (29878433).

77946022207 is a wasteful number, since it uses less digits than its factorization.

77946022207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29878432.

The product of its (nonzero) digits is 592704, while the sum is 46.

The spelling of 77946022207 in words is "seventy-seven billion, nine hundred forty-six million, twenty-two thousand, two hundred seven".