345023451440 has 40 divisors (see below), whose sum is σ = 809278479648. Its totient is φ = 136788055040.

The previous prime is 345023451413. The next prime is 345023451449. The reversal of 345023451440 is 44154320543.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 345023451440.

It is not an unprimeable number, because it can be changed into a prime (345023451449) 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, 19074116 + ... + 19092195.

Almost surely, 2^345023451440 is an apocalyptic number.

It is an amenable number.

345023451440 is an abundant number, since it is smaller than the sum of its proper divisors (464255028208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

345023451440 is a wasteful number, since it uses less digits than its factorization.

345023451440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38166437 (or 38166431 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 345023451440 its reverse (44154320543), we get a palindrome (389177771983).

The spelling of 345023451440 in words is "three hundred forty-five billion, twenty-three million, four hundred fifty-one thousand, four hundred forty".