20431177126 has 16 divisors (see below), whose sum is σ = 30866853024. Its totient is φ = 10142371584.

The previous prime is 20431177111. The next prime is 20431177141. The reversal of 20431177126 is 62177113402.

It is an interprime number because it is at equal distance from previous prime (20431177111) and next prime (20431177141).

It is a junction number, because it is equal to n+sod(n) for n = 20431177091 and 20431177100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249046 + ... + 320758.

It is an arithmetic number, because the mean of its divisors is an integer number (1929178314).

Almost surely, 2^20431177126 is an apocalyptic number.

20431177126 is a deficient number, since it is larger than the sum of its proper divisors (10435675898).

20431177126 is a wasteful number, since it uses less digits than its factorization.

20431177126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72735.

The product of its (nonzero) digits is 14112, while the sum is 34.

The spelling of 20431177126 in words is "twenty billion, four hundred thirty-one million, one hundred seventy-seven thousand, one hundred twenty-six".