340987376817 has 48 divisors (see below), whose sum is σ = 527209371520. Its totient is φ = 211729593600.

The previous prime is 340987376777. The next prime is 340987376819. The reversal of 340987376817 is 718673789043.

340987376817 is a `hidden beast` number, since 3 + 409 + 87 + 3 + 76 + 81 + 7 = 666.

It is not a de Polignac number, because 340987376817 - 2⁶ = 340987376753 is a prime.

It is a super-2 number, since 2×340987376817² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340987376819) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26290068 + ... + 26303034.

Almost surely, 2^340987376817 is an apocalyptic number.

It is an amenable number.

340987376817 is a deficient number, since it is larger than the sum of its proper divisors (186221994703).

340987376817 is a wasteful number, since it uses less digits than its factorization.

340987376817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15574 (or 15571 counting only the distinct ones).

The product of its (nonzero) digits is 42674688, while the sum is 63.

The spelling of 340987376817 in words is "three hundred forty billion, nine hundred eighty-seven million, three hundred seventy-six thousand, eight hundred seventeen".