77899621441404 has 96 divisors (see below), whose sum is σ = 213349792803840. Its totient is φ = 21655180403712.

The previous prime is 77899621441399. The next prime is 77899621441469. The reversal of 77899621441404 is 40414412699877.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 289652404 + ... + 289921220.

It is an arithmetic number, because the mean of its divisors is an integer number (2222393675040).

Almost surely, 2^{77899621441404} is an apocalyptic number.

77899621441404 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

77899621441404 is an abundant number, since it is smaller than the sum of its proper divisors (135450171362436).

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

77899621441404 is a wasteful number, since it uses less digits than its factorization.

77899621441404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362107 (or 362105 counting only the distinct ones).

The product of its (nonzero) digits is 97542144, while the sum is 66.

The spelling of 77899621441404 in words is "seventy-seven trillion, eight hundred ninety-nine billion, six hundred twenty-one million, four hundred forty-one thousand, four hundred four".