77840712017814 has 16 divisors (see below), whose sum is σ = 159478531939440. Its totient is φ = 25314052688640.

The previous prime is 77840712017771. The next prime is 77840712017857. The reversal of 77840712017814 is 41871021704877.

It is an interprime number because it is at equal distance from previous prime (77840712017771) and next prime (77840712017857).

It is a congruent number.

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, 158212829059 + ... + 158212829550.

It is an arithmetic number, because the mean of its divisors is an integer number (9967408246215).

Almost surely, 2^{77840712017814} is an apocalyptic number.

77840712017814 is an abundant number, since it is smaller than the sum of its proper divisors (81637819921626).

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

77840712017814 is a wasteful number, since it uses less digits than its factorization.

77840712017814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316425658655.

The product of its (nonzero) digits is 4917248, while the sum is 57.

The spelling of 77840712017814 in words is "seventy-seven trillion, eight hundred forty billion, seven hundred twelve million, seventeen thousand, eight hundred fourteen".