77998026338736 has 40 divisors (see below), whose sum is σ = 230279887286784. Its totient is φ = 22285150382400.

The previous prime is 77998026338671. The next prime is 77998026338773. The reversal of 77998026338736 is 63783362089977.

It is a super-3 number, since 3×77998026338736³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 116068491240 + ... + 116068491911.

Almost surely, 2^{77998026338736} is an apocalyptic number.

It is an amenable number.

77998026338736 is an abundant number, since it is smaller than the sum of its proper divisors (152281860948048).

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

77998026338736 is a wasteful number, since it uses less digits than its factorization.

77998026338736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232136983169 (or 232136983163 counting only the distinct ones).

The product of its (nonzero) digits is 3456649728, while the sum is 78.

The spelling of 77998026338736 in words is "seventy-seven trillion, nine hundred ninety-eight billion, twenty-six million, three hundred thirty-eight thousand, seven hundred thirty-six".