20071270902 has 16 divisors (see below), whose sum is σ = 40144512960. Its totient is φ = 6690095112.

The previous prime is 20071270889. The next prime is 20071270937. The reversal of 20071270902 is 20907217002.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20071270902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72693 + ... + 213135.

It is an arithmetic number, because the mean of its divisors is an integer number (2509032060).

Almost surely, 2^20071270902 is an apocalyptic number.

20071270902 is an abundant number, since it is smaller than the sum of its proper divisors (20073242058).

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

20071270902 is a wasteful number, since it uses less digits than its factorization.

20071270902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164267.

The product of its (nonzero) digits is 3528, while the sum is 30.

Adding to 20071270902 its reverse (20907217002), we get a palindrome (40978487904).

The spelling of 20071270902 in words is "twenty billion, seventy-one million, two hundred seventy thousand, nine hundred two".