77420453604 has 384 divisors, whose sum is σ = 218106040320. Its totient is φ = 21163161600.

The previous prime is 77420453573. The next prime is 77420453611. The reversal of 77420453604 is 40635402477.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 474972027 + ... + 474972189.

It is an arithmetic number, because the mean of its divisors is an integer number (567984480).

Almost surely, 2^77420453604 is an apocalyptic number.

77420453604 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77420453604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109053020160).

77420453604 is an abundant number, since it is smaller than the sum of its proper divisors (140685586716).

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

77420453604 is a wasteful number, since it uses less digits than its factorization.

77420453604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 42.

The spelling of 77420453604 in words is "seventy-seven billion, four hundred twenty million, four hundred fifty-three thousand, six hundred four".