345465137999921 has 8 divisors (see below), whose sum is σ = 345617259070080. Its totient is φ = 345313039413888.

The previous prime is 345465137999893. The next prime is 345465137999963. The reversal of 345465137999921 is 129999731564543.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345465137999921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345465137299921) 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, 25152500 + ... + 36381018.

It is an arithmetic number, because the mean of its divisors is an integer number (43202157383760).

Almost surely, 2^{345465137999921} is an apocalyptic number.

It is an amenable number.

345465137999921 is a deficient number, since it is larger than the sum of its proper divisors (152121070159).

345465137999921 is a wasteful number, since it uses less digits than its factorization.

345465137999921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11242063.

The product of its digits is 1984046400, while the sum is 77.

The spelling of 345465137999921 in words is "three hundred forty-five trillion, four hundred sixty-five billion, one hundred thirty-seven million, nine hundred ninety-nine thousand, nine hundred twenty-one".