20045451131 has 8 divisors (see below), whose sum is σ = 20411154240. Its totient is φ = 19680613128.

The previous prime is 20045451067. The next prime is 20045451143. The reversal of 20045451131 is 13115454002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20045451131 - 2⁶ = 20045451067 is a prime.

It is a super-2 number, since 2×20045451131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20045451131.

It is not an unprimeable number, because it can be changed into a prime (20045451191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169421 + ... + 262286.

It is an arithmetic number, because the mean of its divisors is an integer number (2551394280).

Almost surely, 2^20045451131 is an apocalyptic number.

20045451131 is a deficient number, since it is larger than the sum of its proper divisors (365703109).

20045451131 is an equidigital number, since it uses as much as digits as its factorization.

20045451131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432553.

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 20045451131 in words is "twenty billion, forty-five million, four hundred fifty-one thousand, one hundred thirty-one".