920745129128 has 64 divisors (see below), whose sum is σ = 2002402321920. Its totient is φ = 392267059200.

The previous prime is 920745129127. The next prime is 920745129223. The reversal of 920745129128 is 821921547029.

920745129128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (920745129127) 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, 916376 + ... + 1637447.

It is an arithmetic number, because the mean of its divisors is an integer number (31287536280).

Almost surely, 2^920745129128 is an apocalyptic number.

It is an amenable number.

920745129128 is an abundant number, since it is smaller than the sum of its proper divisors (1081657192792).

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

920745129128 is a wasteful number, since it uses less digits than its factorization.

920745129128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554098 (or 2554094 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 920745129128 in words is "nine hundred twenty billion, seven hundred forty-five million, one hundred twenty-nine thousand, one hundred twenty-eight".