20200007761921 has 32 divisors (see below), whose sum is σ = 23242677494400. Its totient is φ = 17399550643200.

The previous prime is 20200007761909. The next prime is 20200007761957. The reversal of 20200007761921 is 12916770000202.

It is a cyclic number.

It is not a de Polignac number, because 20200007761921 - 2⁵ = 20200007761889 is a prime.

It is a super-2 number, since 2×20200007761921² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20200007761961) 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 31 ways as a sum of consecutive naturals, for example, 205174935 + ... + 205273363.

It is an arithmetic number, because the mean of its divisors is an integer number (726333671700).

Almost surely, 2^{20200007761921} is an apocalyptic number.

It is an amenable number.

20200007761921 is a deficient number, since it is larger than the sum of its proper divisors (3042669732479).

20200007761921 is a wasteful number, since it uses less digits than its factorization.

20200007761921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110929.

The product of its (nonzero) digits is 21168, while the sum is 37.

The spelling of 20200007761921 in words is "twenty trillion, two hundred billion, seven million, seven hundred sixty-one thousand, nine hundred twenty-one".