20783295878 has 8 divisors (see below), whose sum is σ = 31259890272. Its totient is φ = 10363332456.

The previous prime is 20783295877. The next prime is 20783295893. The reversal of 20783295878 is 87859238702.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20783295877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14156825 + ... + 14158292.

It is an arithmetic number, because the mean of its divisors is an integer number (3907486284).

Almost surely, 2^20783295878 is an apocalyptic number.

20783295878 is a deficient number, since it is larger than the sum of its proper divisors (10476594394).

20783295878 is a wasteful number, since it uses less digits than its factorization.

20783295878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28315486.

The product of its (nonzero) digits is 13547520, while the sum is 59.

The spelling of 20783295878 in words is "twenty billion, seven hundred eighty-three million, two hundred ninety-five thousand, eight hundred seventy-eight".