20440951834 has 8 divisors (see below), whose sum is σ = 30664022868. Its totient is φ = 10219610880.

The previous prime is 20440951823. The next prime is 20440951889. The reversal of 20440951834 is 43815904402.

It can be written as a sum of positive squares in 2 ways, for example, as 20248436209 + 192515625 = 142297^2 + 13875^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402567 + ... + 450490.

Almost surely, 2^20440951834 is an apocalyptic number.

20440951834 is a deficient number, since it is larger than the sum of its proper divisors (10223071034).

20440951834 is a wasteful number, since it uses less digits than its factorization.

20440951834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865040.

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 20440951834 in words is "twenty billion, four hundred forty million, nine hundred fifty-one thousand, eight hundred thirty-four".