345991240269 has 12 divisors (see below), whose sum is σ = 521494043616. Its totient is φ = 220632095112.

The previous prime is 345991240261. The next prime is 345991240271. The reversal of 345991240269 is 962042199543.

345991240269 is a `hidden beast` number, since 3 + 4 + 59 + 91 + 240 + 269 = 666.

It is not a de Polignac number, because 345991240269 - 2³ = 345991240261 is a prime.

It is a super-2 number, since 2×345991240269² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345991240261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 835727427 + ... + 835727840.

It is an arithmetic number, because the mean of its divisors is an integer number (43457836968).

Almost surely, 2^345991240269 is an apocalyptic number.

It is an amenable number.

345991240269 is a deficient number, since it is larger than the sum of its proper divisors (175502803347).

345991240269 is a wasteful number, since it uses less digits than its factorization.

345991240269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671455296 (or 1671455293 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 345991240269 in words is "three hundred forty-five billion, nine hundred ninety-one million, two hundred forty thousand, two hundred sixty-nine".