2120878808 has 32 divisors (see below), whose sum is σ = 4124314800. Its totient is φ = 1021249152.

The previous prime is 2120878789. The next prime is 2120878847. The reversal of 2120878808 is 8088780212.

It is a Cunningham number, because it is equal to 46053²-1.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80591 + ... + 103617.

Almost surely, 2^2120878808 is an apocalyptic number.

It is an amenable number.

2120878808 is a deficient number, since it is larger than the sum of its proper divisors (2003435992).

2120878808 is a wasteful number, since it uses less digits than its factorization.

2120878808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23459 (or 23455 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 44.

The square root of 2120878808 is about 46052.9999891429. Note that the first 4 decimals coincide. The cubic root of 2120878808 is about 1284.8091401998.

The spelling of 2120878808 in words is "two billion, one hundred twenty million, eight hundred seventy-eight thousand, eight hundred eight".