20445854402 has 16 divisors (see below), whose sum is σ = 31434728832. Its totient is φ = 9970633200.

The previous prime is 20445854399. The next prime is 20445854447.

20445854402 is nontrivially palindromic in base 10.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 741818 + ... + 768885.

It is an arithmetic number, because the mean of its divisors is an integer number (1964670552).

Almost surely, 2^20445854402 is an apocalyptic number.

20445854402 is a deficient number, since it is larger than the sum of its proper divisors (10988874430).

20445854402 is a wasteful number, since it uses less digits than its factorization.

20445854402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510873.

The product of its (nonzero) digits is 204800, while the sum is 38.

The spelling of 20445854402 in words is "twenty billion, four hundred forty-five million, eight hundred fifty-four thousand, four hundred two".