20757673205121 has 64 divisors (see below), whose sum is σ = 30131841259520. Its totient is φ = 12665956262400.

The previous prime is 20757673205081. The next prime is 20757673205147. The reversal of 20757673205121 is 12150237675702.

It is not a de Polignac number, because 20757673205121 - 2¹⁷ = 20757673074049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20757673205221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 833394750 + ... + 833419656.

It is an arithmetic number, because the mean of its divisors is an integer number (470810019680).

Almost surely, 2^{20757673205121} is an apocalyptic number.

It is an amenable number.

20757673205121 is a deficient number, since it is larger than the sum of its proper divisors (9374168054399).

20757673205121 is a wasteful number, since it uses less digits than its factorization.

20757673205121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27734.

The product of its (nonzero) digits is 1234800, while the sum is 48.

The spelling of 20757673205121 in words is "twenty trillion, seven hundred fifty-seven billion, six hundred seventy-three million, two hundred five thousand, one hundred twenty-one".