20842260880 has 40 divisors (see below), whose sum is σ = 55380866112. Its totient is φ = 7145917824.

The previous prime is 20842260871. The next prime is 20842260917. The reversal of 20842260880 is 8806224802.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 18608602 + ... + 18609721.

Almost surely, 2^20842260880 is an apocalyptic number.

20842260880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20842260880 is an abundant number, since it is smaller than the sum of its proper divisors (34538605232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20842260880 is a wasteful number, since it uses less digits than its factorization.

20842260880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37218343 (or 37218337 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The spelling of 20842260880 in words is "twenty billion, eight hundred forty-two million, two hundred sixty thousand, eight hundred eighty".