20873303129872 has 20 divisors (see below), whose sum is σ = 40444195377676. Its totient is φ = 10436091419520.

The previous prime is 20873303129797. The next prime is 20873303129881. The reversal of 20873303129872 is 27892130337802.

It can be written as a sum of positive squares in 2 ways, for example, as 1894245731856 + 18979057398016 = 1376316^2 + 4356496^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34701579 + ... + 35297962.

Almost surely, 2^{20873303129872} is an apocalyptic number.

It is an amenable number.

20873303129872 is a deficient number, since it is larger than the sum of its proper divisors (19570892247804).

20873303129872 is a wasteful number, since it uses less digits than its factorization.

20873303129872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70018186 (or 70018180 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 20873303129872 in words is "twenty trillion, eight hundred seventy-three billion, three hundred three million, one hundred twenty-nine thousand, eight hundred seventy-two".