77420808396 has 48 divisors (see below), whose sum is σ = 200735718400. Its totient is φ = 25804994256.

The previous prime is 77420808389. The next prime is 77420808427. The reversal of 77420808396 is 69380802477.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2546541 + ... + 2576763.

Almost surely, 2^77420808396 is an apocalyptic number.

It is an amenable number.

77420808396 is an abundant number, since it is smaller than the sum of its proper divisors (123314910004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77420808396 is a wasteful number, since it uses less digits than its factorization.

77420808396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53955 (or 53947 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 77420808396 in words is "seventy-seven billion, four hundred twenty million, eight hundred eight thousand, three hundred ninety-six".