920904643760 has 80 divisors (see below), whose sum is σ = 2174252213952. Its totient is φ = 362699136000.

The previous prime is 920904643739. The next prime is 920904643807. The reversal of 920904643760 is 67346409029.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 920904643699 and 920904643708.

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, 1147637 + ... + 1777323.

Almost surely, 2^920904643760 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 920904643760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1087126106976).

920904643760 is an abundant number, since it is smaller than the sum of its proper divisors (1253347570192).

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

920904643760 is a wasteful number, since it uses less digits than its factorization.

920904643760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629982 (or 629976 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 50.

The spelling of 920904643760 in words is "nine hundred twenty billion, nine hundred four million, six hundred forty-three thousand, seven hundred sixty".