345520345403640 has 64 divisors (see below), whose sum is σ = 1130793857688960. Its totient is φ = 83762507976320.

The previous prime is 345520345403561. The next prime is 345520345403641. The reversal of 345520345403640 is 46304543025543.

It is a self number, because there is not a number n which added to its sum of digits gives 345520345403640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345520345403641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130878917394 + ... + 130878920033.

It is an arithmetic number, because the mean of its divisors is an integer number (17668654026390).

Almost surely, 2^{345520345403640} is an apocalyptic number.

345520345403640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

345520345403640 is an abundant number, since it is smaller than the sum of its proper divisors (785273512285320).

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

345520345403640 is a wasteful number, since it uses less digits than its factorization.

345520345403640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261757837452 (or 261757837448 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 48.

The spelling of 345520345403640 in words is "three hundred forty-five trillion, five hundred twenty billion, three hundred forty-five million, four hundred three thousand, six hundred forty".