345354015632520 has 128 divisors (see below), whose sum is σ = 1066504758359040. Its totient is φ = 89414034850560.

The previous prime is 345354015632519. The next prime is 345354015632539. The reversal of 345354015632520 is 25236510453543.

It is a super-2 number, since 2×345354015632520² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 345354015632520.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199524726 + ... + 201248165.

It is an arithmetic number, because the mean of its divisors is an integer number (8332068424680).

Almost surely, 2^{345354015632520} is an apocalyptic number.

345354015632520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

345354015632520 is an abundant number, since it is smaller than the sum of its proper divisors (721150742726520).

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

345354015632520 is a wasteful number, since it uses less digits than its factorization.

345354015632520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400773115 (or 400773111 counting only the distinct ones).

The product of its (nonzero) digits is 6480000, while the sum is 48.

The spelling of 345354015632520 in words is "three hundred forty-five trillion, three hundred fifty-four billion, fifteen million, six hundred thirty-two thousand, five hundred twenty".