77402559948 has 24 divisors (see below), whose sum is σ = 206406826752. Its totient is φ = 22115017104.

The previous prime is 77402559851. The next prime is 77402559959. The reversal of 77402559948 is 84995520477.

It is a junction number, because it is equal to n+sod(n) for n = 77402559891 and 77402559900.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460729440 + ... + 460729607.

It is an arithmetic number, because the mean of its divisors is an integer number (8600284448).

Almost surely, 2^77402559948 is an apocalyptic number.

It is an amenable number.

77402559948 is an abundant number, since it is smaller than the sum of its proper divisors (129004266804).

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

77402559948 is a wasteful number, since it uses less digits than its factorization.

77402559948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921459061 (or 921459059 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 60.

The spelling of 77402559948 in words is "seventy-seven billion, four hundred two million, five hundred fifty-nine thousand, nine hundred forty-eight".