77226072008 has 12 divisors (see below), whose sum is σ = 144800358795. Its totient is φ = 38612643000.

The previous prime is 77226071963. The next prime is 77226072031. The reversal of 77226072008 is 80027062277.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 38613036004 + 38613036004 = 196502^2 + 196502^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=196502.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 736883 + ... + 835133.

Almost surely, 2^77226072008 is an apocalyptic number.

It is an amenable number.

77226072008 is a deficient number, since it is larger than the sum of its proper divisors (67574286787).

77226072008 is an frugal number, since it uses more digits than its factorization.

77226072008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196508 (or 98253 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 41.

The spelling of 77226072008 in words is "seventy-seven billion, two hundred twenty-six million, seventy-two thousand, eight".