34512012520 has 64 divisors (see below), whose sum is σ = 78448986000. Its totient is φ = 13663469568.

The previous prime is 34512012497. The next prime is 34512012529. The reversal of 34512012520 is 2521021543.

It can be written as a sum of positive squares in 8 ways, for example, as 1072038564 + 33439973956 = 32742^2 + 182866^2 .

It is not an unprimeable number, because it can be changed into a prime (34512012529) 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, 3470916 + ... + 3480844.

Almost surely, 2^34512012520 is an apocalyptic number.

It is an amenable number.

34512012520 is an abundant number, since it is smaller than the sum of its proper divisors (43936973480).

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

34512012520 is a wasteful number, since it uses less digits than its factorization.

34512012520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10822 (or 10818 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 34512012520 in words is "thirty-four billion, five hundred twelve million, twelve thousand, five hundred twenty".