20878467901 has 8 divisors (see below), whose sum is σ = 21649975200. Its totient is φ = 20110398000.

The previous prime is 20878467871. The next prime is 20878467917. The reversal of 20878467901 is 10976487802.

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

It is not a de Polignac number, because 20878467901 - 2³¹ = 18730984253 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 (20878467101) 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, 846975 + ... + 871276.

It is an arithmetic number, because the mean of its divisors is an integer number (2706246900).

Almost surely, 2^20878467901 is an apocalyptic number.

It is an amenable number.

20878467901 is a deficient number, since it is larger than the sum of its proper divisors (771507299).

20878467901 is a wasteful number, since it uses less digits than its factorization.

20878467901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718699.

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 20878467901 in words is "twenty billion, eight hundred seventy-eight million, four hundred sixty-seven thousand, nine hundred one".