920812720902 has 16 divisors (see below), whose sum is σ = 1841659388400. Its totient is φ = 306931915872.

The previous prime is 920812720859. The next prime is 920812720909. The reversal of 920812720902 is 209027218029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920812720909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1054777 + ... + 1718772.

It is an arithmetic number, because the mean of its divisors is an integer number (115103711775).

Almost surely, 2^920812720902 is an apocalyptic number.

920812720902 is an abundant number, since it is smaller than the sum of its proper divisors (920846667498).

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

920812720902 is a wasteful number, since it uses less digits than its factorization.

920812720902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2828887.

The product of its (nonzero) digits is 72576, while the sum is 42.

The spelling of 920812720902 in words is "nine hundred twenty billion, eight hundred twelve million, seven hundred twenty thousand, nine hundred two".