340375715721 has 24 divisors (see below), whose sum is σ = 500833467264. Its totient is φ = 222705378720.

The previous prime is 340375715699. The next prime is 340375715741. The reversal of 340375715721 is 127517573043.

340375715721 is a `hidden beast` number, since 3 + 4 + 0 + 3 + 7 + 5 + 71 + 572 + 1 = 666.

It is not a de Polignac number, because 340375715721 - 2⁹ = 340375715209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (340375715741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 878046 + ... + 1204871.

It is an arithmetic number, because the mean of its divisors is an integer number (20868061136).

Almost surely, 2^340375715721 is an apocalyptic number.

It is an amenable number.

340375715721 is a deficient number, since it is larger than the sum of its proper divisors (160457751543).

340375715721 is a wasteful number, since it uses less digits than its factorization.

340375715721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2083261 (or 2083258 counting only the distinct ones).

The product of its (nonzero) digits is 617400, while the sum is 45.

The spelling of 340375715721 in words is "three hundred forty billion, three hundred seventy-five million, seven hundred fifteen thousand, seven hundred twenty-one".