20610131427 has 40 divisors (see below), whose sum is σ = 31376064720. Its totient is φ = 13478840640.

The previous prime is 20610131417. The next prime is 20610131447. The reversal of 20610131427 is 72413101602.

20610131427 is a `hidden beast` number, since 2 + 0 + 610 + 1 + 3 + 1 + 42 + 7 = 666.

It is not a de Polignac number, because 20610131427 - 2²⁴ = 20593354211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 20610131427.

It is not an unprimeable number, because it can be changed into a prime (20610131417) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 1916688 + ... + 1927410.

It is an arithmetic number, because the mean of its divisors is an integer number (784401618).

Almost surely, 2^20610131427 is an apocalyptic number.

20610131427 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20610131427 is a deficient number, since it is larger than the sum of its proper divisors (10765933293).

20610131427 is a wasteful number, since it uses less digits than its factorization.

20610131427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11185 (or 11176 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The spelling of 20610131427 in words is "twenty billion, six hundred ten million, one hundred thirty-one thousand, four hundred twenty-seven".