20254474911 has 16 divisors (see below), whose sum is σ = 29499402240. Its totient is φ = 12259461120.

The previous prime is 20254474871. The next prime is 20254474921. The reversal of 20254474911 is 11947445202.

It is not a de Polignac number, because 20254474911 - 2⁶ = 20254474847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20254474911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20254474921) 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, 373695 + ... + 424448.

It is an arithmetic number, because the mean of its divisors is an integer number (1843712640).

Almost surely, 2^20254474911 is an apocalyptic number.

20254474911 is a deficient number, since it is larger than the sum of its proper divisors (9244927329).

20254474911 is a wasteful number, since it uses less digits than its factorization.

20254474911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798926.

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 20254474911 in words is "twenty billion, two hundred fifty-four million, four hundred seventy-four thousand, nine hundred eleven".