3520123707618 has 80 divisors (see below), whose sum is σ = 9488943942720. Its totient is φ = 952815433824.

The previous prime is 3520123707593. The next prime is 3520123707623. The reversal of 3520123707618 is 8167073210253.

3520123707618 is a `hidden beast` number, since 3 + 5 + 2 + 0 + 1 + 23 + 7 + 0 + 7 + 618 = 666.

3520123707618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 81667021 + ... + 81710112.

It is an arithmetic number, because the mean of its divisors is an integer number (118611799284).

Almost surely, 2^{3520123707618} is an apocalyptic number.

3520123707618 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3520123707618 is an abundant number, since it is smaller than the sum of its proper divisors (5968820235102).

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

3520123707618 is a wasteful number, since it uses less digits than its factorization.

3520123707618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163377173 (or 163377164 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 3520123707618 in words is "three trillion, five hundred twenty billion, one hundred twenty-three million, seven hundred seven thousand, six hundred eighteen".