20440377702 has 80 divisors (see below), whose sum is σ = 48448303200. Its totient is φ = 6427859328.

The previous prime is 20440377697. The next prime is 20440377733. The reversal of 20440377702 is 20777304402.

It is a congruent number.

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 39 ways as a sum of consecutive naturals, for example, 234424 + ... + 309572.

It is an arithmetic number, because the mean of its divisors is an integer number (605603790).

Almost surely, 2^20440377702 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20440377702, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24224151600).

20440377702 is an abundant number, since it is smaller than the sum of its proper divisors (28007925498).

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

20440377702 is a wasteful number, since it uses less digits than its factorization.

20440377702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75259 (or 75250 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 36.

The spelling of 20440377702 in words is "twenty billion, four hundred forty million, three hundred seventy-seven thousand, seven hundred two".