920639955917084 has 48 divisors (see below), whose sum is σ = 1859421420591168. Its totient is φ = 395451601763328.

The previous prime is 920639955917083. The next prime is 920639955917089. The reversal of 920639955917084 is 480719559936029.

It is a junction number, because it is equal to n+sod(n) for n = 920639955916996 and 920639955917014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920639955917083) 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, 10402196957 + ... + 10402285460.

It is an arithmetic number, because the mean of its divisors is an integer number (38737946262316).

It is a 1-persistent number, because it is pandigital, but 2⋅920639955917084 = 1841279911834168 is not.

Almost surely, 2^{920639955917084} is an apocalyptic number.

It is an amenable number.

920639955917084 is an abundant number, since it is smaller than the sum of its proper divisors (938781464674084).

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

920639955917084 is a wasteful number, since it uses less digits than its factorization.

920639955917084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20804482494 (or 20804482492 counting only the distinct ones).

The product of its (nonzero) digits is 1322697600, while the sum is 77.

The spelling of 920639955917084 in words is "nine hundred twenty trillion, six hundred thirty-nine billion, nine hundred fifty-five million, nine hundred seventeen thousand, eighty-four".