77220202007 has 4 divisors (see below), whose sum is σ = 83160217560. Its totient is φ = 71280186456.

The previous prime is 77220201959. The next prime is 77220202027. The reversal of 77220202007 is 70020202277.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70020202277 = 479 ⋅146179963.

It is a cyclic number.

It is not a de Polignac number, because 77220202007 - 2³⁰ = 76146460183 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 (77220202027) 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, 2970007757 + ... + 2970007782.

It is an arithmetic number, because the mean of its divisors is an integer number (20790054390).

Almost surely, 2^77220202007 is an apocalyptic number.

77220202007 is a deficient number, since it is larger than the sum of its proper divisors (5940015553).

77220202007 is a wasteful number, since it uses less digits than its factorization.

77220202007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5940015552.

The product of its (nonzero) digits is 5488, while the sum is 29.

The spelling of 77220202007 in words is "seventy-seven billion, two hundred twenty million, two hundred two thousand, seven".