345500477021 has 4 divisors (see below), whose sum is σ = 394857688032. Its totient is φ = 296143266012.

The previous prime is 345500476999. The next prime is 345500477029. The reversal of 345500477021 is 120774005543.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 345500477021 - 2³⁴ = 328320607837 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 (345500477029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24678605495 + ... + 24678605508.

It is an arithmetic number, because the mean of its divisors is an integer number (98714422008).

Almost surely, 2^345500477021 is an apocalyptic number.

It is an amenable number.

345500477021 is a deficient number, since it is larger than the sum of its proper divisors (49357211011).

345500477021 is an equidigital number, since it uses as much as digits as its factorization.

345500477021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49357211010.

The product of its (nonzero) digits is 117600, while the sum is 38.

The spelling of 345500477021 in words is "three hundred forty-five billion, five hundred million, four hundred seventy-seven thousand, twenty-one".