20785033173040 has 80 divisors (see below), whose sum is σ = 50708009836800. Its totient is φ = 7908106739456.

The previous prime is 20785033173001. The next prime is 20785033173059. The reversal of 20785033173040 is 4037133058702.

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

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, 31224310 + ... + 31883029.

It is an arithmetic number, because the mean of its divisors is an integer number (633850122960).

Almost surely, 2^{20785033173040} is an apocalyptic number.

20785033173040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20785033173040 is an abundant number, since it is smaller than the sum of its proper divisors (29922976663760).

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

20785033173040 is a wasteful number, since it uses less digits than its factorization.

20785033173040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63107554 (or 63107548 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 20785033173040 in words is "twenty trillion, seven hundred eighty-five billion, thirty-three million, one hundred seventy-three thousand, forty".