20759813451 has 12 divisors (see below), whose sum is σ = 32293043328. Its totient is φ = 12775269744.

The previous prime is 20759813423. The next prime is 20759813453. The reversal of 20759813451 is 15431895702.

20759813451 is a `hidden beast` number, since 2 + 0 + 7 + 598 + 1 + 3 + 4 + 51 = 666.

It is not a de Polignac number, because 20759813451 - 2²¹ = 20757716299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20759813397 and 20759813406.

It is not an unprimeable number, because it can be changed into a prime (20759813453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88717035 + ... + 88717268.

It is an arithmetic number, because the mean of its divisors is an integer number (2691086944).

Almost surely, 2^20759813451 is an apocalyptic number.

20759813451 is a deficient number, since it is larger than the sum of its proper divisors (11533229877).

20759813451 is a wasteful number, since it uses less digits than its factorization.

20759813451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177434322 (or 177434319 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 20759813451 in words is "twenty billion, seven hundred fifty-nine million, eight hundred thirteen thousand, four hundred fifty-one".