208120012534 has 32 divisors (see below), whose sum is σ = 358197428736. Its totient is φ = 88839495360.

The previous prime is 208120012489. The next prime is 208120012561. The reversal of 208120012534 is 435210021802.

208120012534 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10639567 + ... + 10659109.

It is an arithmetic number, because the mean of its divisors is an integer number (11193669648).

Almost surely, 2^208120012534 is an apocalyptic number.

208120012534 is a deficient number, since it is larger than the sum of its proper divisors (150077416202).

208120012534 is a wasteful number, since it uses less digits than its factorization.

208120012534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22540.

The product of its (nonzero) digits is 3840, while the sum is 28.

The spelling of 208120012534 in words is "two hundred eight billion, one hundred twenty million, twelve thousand, five hundred thirty-four".