20481694567 has 8 divisors (see below), whose sum is σ = 20531253600. Its totient is φ = 20432185344.

The previous prime is 20481694561. The next prime is 20481694577. The reversal of 20481694567 is 76549618402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20481694567 - 2³ = 20481694559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20481694561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 888159 + ... + 910927.

It is an arithmetic number, because the mean of its divisors is an integer number (2566406700).

Almost surely, 2^20481694567 is an apocalyptic number.

20481694567 is a deficient number, since it is larger than the sum of its proper divisors (49559033).

20481694567 is a wasteful number, since it uses less digits than its factorization.

20481694567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24905.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 20481694567 in words is "twenty billion, four hundred eighty-one million, six hundred ninety-four thousand, five hundred sixty-seven".