20325142866 has 48 divisors (see below), whose sum is σ = 47310912000. Its totient is φ = 5804255520.

The previous prime is 20325142861. The next prime is 20325142879. The reversal of 20325142866 is 66824152302.

It is a super-2 number, since 2×20325142866² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20325142861) 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 23 ways as a sum of consecutive naturals, for example, 604260 + ... + 637008.

It is an arithmetic number, because the mean of its divisors is an integer number (985644000).

Almost surely, 2^20325142866 is an apocalyptic number.

20325142866 is an abundant number, since it is smaller than the sum of its proper divisors (26985769134).

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

20325142866 is a wasteful number, since it uses less digits than its factorization.

20325142866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34879 (or 34872 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 20325142866 in words is "twenty billion, three hundred twenty-five million, one hundred forty-two thousand, eight hundred sixty-six".