20477018859 has 8 divisors (see below), whose sum is σ = 29784754752. Its totient is φ = 12410314440.

The previous prime is 20477018843. The next prime is 20477018869. The reversal of 20477018859 is 95881077402.

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

It is not a de Polignac number, because 20477018859 - 2⁴ = 20477018843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20477018819) 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, 310257829 + ... + 310257894.

It is an arithmetic number, because the mean of its divisors is an integer number (3723094344).

Almost surely, 2^20477018859 is an apocalyptic number.

20477018859 is a deficient number, since it is larger than the sum of its proper divisors (9307735893).

20477018859 is a wasteful number, since it uses less digits than its factorization.

20477018859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620515737.

The product of its (nonzero) digits is 1128960, while the sum is 51.

The spelling of 20477018859 in words is "twenty billion, four hundred seventy-seven million, eighteen thousand, eight hundred fifty-nine".