20614491859 has 8 divisors (see below), whose sum is σ = 22202015472. Its totient is φ = 19027224480.

The previous prime is 20614491811. The next prime is 20614491889. The reversal of 20614491859 is 95819441602.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20614491859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20614491809) 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, 123369 + ... + 237589.

It is an arithmetic number, because the mean of its divisors is an integer number (2775251934).

Almost surely, 2^20614491859 is an apocalyptic number.

20614491859 is a deficient number, since it is larger than the sum of its proper divisors (1587523613).

20614491859 is a wasteful number, since it uses less digits than its factorization.

20614491859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128117.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 20614491859 in words is "twenty billion, six hundred fourteen million, four hundred ninety-one thousand, eight hundred fifty-nine".