920785885572 has 48 divisors (see below), whose sum is σ = 2471690181632. Its totient is φ = 261339415200.

The previous prime is 920785885561. The next prime is 920785885583. The reversal of 920785885572 is 275588587029.

It is an interprime number because it is at equal distance from previous prime (920785885561) and next prime (920785885583).

It is a super-2 number, since 2×920785885572² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 36284458 + ... + 36309825.

Almost surely, 2^920785885572 is an apocalyptic number.

It is an amenable number.

920785885572 is an abundant number, since it is smaller than the sum of its proper divisors (1550904296060).

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

920785885572 is a wasteful number, since it uses less digits than its factorization.

920785885572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72594448 (or 72594446 counting only the distinct ones).

The product of its (nonzero) digits is 112896000, while the sum is 66.

The spelling of 920785885572 in words is "nine hundred twenty billion, seven hundred eighty-five million, eight hundred eighty-five thousand, five hundred seventy-two".