20106771448 has 32 divisors (see below), whose sum is σ = 38854569600. Its totient is φ = 9748918368.

The previous prime is 20106771439. The next prime is 20106771449. The reversal of 20106771448 is 84417760102.

It is a happy number.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20106771448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20106771449) 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, 162436 + ... + 258067.

It is an arithmetic number, because the mean of its divisors is an integer number (1214205300).

Almost surely, 2^20106771448 is an apocalyptic number.

It is an amenable number.

20106771448 is a deficient number, since it is larger than the sum of its proper divisors (18747798152).

20106771448 is a wasteful number, since it uses less digits than its factorization.

20106771448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420691 (or 420687 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The spelling of 20106771448 in words is "twenty billion, one hundred six million, seven hundred seventy-one thousand, four hundred forty-eight".