340021849678 has 32 divisors (see below), whose sum is σ = 595027353600. Its totient is φ = 145665598680.

The previous prime is 340021849639. The next prime is 340021849691. The reversal of 340021849678 is 876948120043.

It is a super-2 number, since 2×340021849678² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1647043 + ... + 1841953.

It is an arithmetic number, because the mean of its divisors is an integer number (18594604800).

Almost surely, 2^340021849678 is an apocalyptic number.

340021849678 is a deficient number, since it is larger than the sum of its proper divisors (255005503922).

340021849678 is a wasteful number, since it uses less digits than its factorization.

340021849678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197477 (or 197463 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 340021849678 in words is "three hundred forty billion, twenty-one million, eight hundred forty-nine thousand, six hundred seventy-eight".