345385658721 has 16 divisors (see below), whose sum is σ = 473048835584. Its totient is φ = 223992117504.

The previous prime is 345385658663. The next prime is 345385658741. The reversal of 345385658721 is 127856583543.

It is not a de Polignac number, because 345385658721 - 2⁹ = 345385658209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345385658741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312441 + ... + 887913.

It is an arithmetic number, because the mean of its divisors is an integer number (29565552224).

Almost surely, 2^345385658721 is an apocalyptic number.

It is an amenable number.

345385658721 is a deficient number, since it is larger than the sum of its proper divisors (127663176863).

345385658721 is a wasteful number, since it uses less digits than its factorization.

345385658721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580920.

The product of its digits is 24192000, while the sum is 57.

The spelling of 345385658721 in words is "three hundred forty-five billion, three hundred eighty-five million, six hundred fifty-eight thousand, seven hundred twenty-one".