20671461927 has 16 divisors (see below), whose sum is σ = 30627521280. Its totient is φ = 13779564696.

The previous prime is 20671461917. The next prime is 20671461929. The reversal of 20671461927 is 72916417602.

20671461927 is a `hidden beast` number, since 2 + 0 + 6 + 7 + 1 + 4 + 619 + 27 = 666.

It is not a de Polignac number, because 20671461927 - 2²² = 20667267623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20671461929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275628 + ... + 342510.

It is an arithmetic number, because the mean of its divisors is an integer number (1914220080).

Almost surely, 2^20671461927 is an apocalyptic number.

20671461927 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20671461927 is a deficient number, since it is larger than the sum of its proper divisors (9956059353).

20671461927 is a wasteful number, since it uses less digits than its factorization.

20671461927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78339 (or 78333 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 20671461927 in words is "twenty billion, six hundred seventy-one million, four hundred sixty-one thousand, nine hundred twenty-seven".