20994551792004 has 24 divisors (see below), whose sum is σ = 55985471445568. Its totient is φ = 5998443369120.

The previous prime is 20994551792003. The next prime is 20994551792021. The reversal of 20994551792004 is 40029715549902.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20994551792003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124967570107 + ... + 124967570274.

Almost surely, 2^{20994551792004} is an apocalyptic number.

It is an amenable number.

20994551792004 is an abundant number, since it is smaller than the sum of its proper divisors (34990919653564).

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

20994551792004 is a wasteful number, since it uses less digits than its factorization.

20994551792004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249935140395 (or 249935140393 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 57.

The spelling of 20994551792004 in words is "twenty trillion, nine hundred ninety-four billion, five hundred fifty-one million, seven hundred ninety-two thousand, four".