340693077981816 has 288 divisors, whose sum is σ = 1156341719470080. Its totient is φ = 88659623347200.

The previous prime is 340693077981797. The next prime is 340693077981871. The reversal of 340693077981816 is 618189770396043.

It is a happy number.

340693077981816 is a `hidden beast` number, since 3 + 40 + 69 + 307 + 79 + 81 + 81 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 33210880 + ... + 42241551.

Almost surely, 2^{340693077981816} is an apocalyptic number.

340693077981816 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

340693077981816 is an abundant number, since it is smaller than the sum of its proper divisors (815648641488264).

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

340693077981816 is a wasteful number, since it uses less digits than its factorization.

340693077981816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75452515 (or 75452491 counting only the distinct ones).

The product of its (nonzero) digits is 329204736, while the sum is 72.

The spelling of 340693077981816 in words is "three hundred forty trillion, six hundred ninety-three billion, seventy-seven million, nine hundred eighty-one thousand, eight hundred sixteen".