20693408961159 has 16 divisors (see below), whose sum is σ = 33443893271040. Its totient is φ = 12541459976280.

The previous prime is 20693408961157. The next prime is 20693408961167. The reversal of 20693408961159 is 95116980439602.

20693408961159 is a `hidden beast` number, since 2 + 0 + 6 + 9 + 3 + 4 + 0 + 8 + 9 + 611 + 5 + 9 = 666.

It is not a de Polignac number, because 20693408961159 - 2¹ = 20693408961157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20693408961096 and 20693408961105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20693408961157) 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, 34837388527 + ... + 34837389120.

It is an arithmetic number, because the mean of its divisors is an integer number (2090243329440).

Almost surely, 2^{20693408961159} is an apocalyptic number.

20693408961159 is a deficient number, since it is larger than the sum of its proper divisors (12750484309881).

20693408961159 is a wasteful number, since it uses less digits than its factorization.

20693408961159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69674777667 (or 69674777661 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 63.

The spelling of 20693408961159 in words is "twenty trillion, six hundred ninety-three billion, four hundred eight million, nine hundred sixty-one thousand, one hundred fifty-nine".