345636956821 has 8 divisors (see below), whose sum is σ = 372370363904. Its totient is φ = 318924399600.

The previous prime is 345636956813. The next prime is 345636956827. The reversal of 345636956821 is 128659636543.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 345636956821 - 2³ = 345636956813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345636956827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5178021 + ... + 5244346.

It is an arithmetic number, because the mean of its divisors is an integer number (46546295488).

Almost surely, 2^345636956821 is an apocalyptic number.

It is an amenable number.

345636956821 is a deficient number, since it is larger than the sum of its proper divisors (26733407083).

345636956821 is a wasteful number, since it uses less digits than its factorization.

345636956821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10424931.

The product of its digits is 27993600, while the sum is 58.

The spelling of 345636956821 in words is "three hundred forty-five billion, six hundred thirty-six million, nine hundred fifty-six thousand, eight hundred twenty-one".