20071251044 has 48 divisors (see below), whose sum is σ = 38255486976. Its totient is φ = 9159216000.

The previous prime is 20071251029. The next prime is 20071251049. The reversal of 20071251044 is 44015217002.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (20071251049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1652594 + ... + 1664694.

It is an arithmetic number, because the mean of its divisors is an integer number (796989312).

Almost surely, 2^20071251044 is an apocalyptic number.

It is an amenable number.

20071251044 is a deficient number, since it is larger than the sum of its proper divisors (18184235932).

20071251044 is a wasteful number, since it uses less digits than its factorization.

20071251044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12476 (or 12474 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

Adding to 20071251044 its reverse (44015217002), we get a palindrome (64086468046).

The spelling of 20071251044 in words is "twenty billion, seventy-one million, two hundred fifty-one thousand, forty-four".