77490472460 has 48 divisors (see below), whose sum is σ = 168009703680. Its totient is φ = 29990891520.

The previous prime is 77490472459. The next prime is 77490472481. The reversal of 77490472460 is 6427409477.

It is a junction number, because it is equal to n+sod(n) for n = 77490472399 and 77490472408.

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, 6005696 + ... + 6018584.

It is an arithmetic number, because the mean of its divisors is an integer number (3500202160).

Almost surely, 2^77490472460 is an apocalyptic number.

It is an amenable number.

77490472460 is an abundant number, since it is smaller than the sum of its proper divisors (90519231220).

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

77490472460 is a wasteful number, since it uses less digits than its factorization.

77490472460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22626 (or 22624 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 50.

The spelling of 77490472460 in words is "seventy-seven billion, four hundred ninety million, four hundred seventy-two thousand, four hundred sixty".