20426551404 has 48 divisors (see below), whose sum is σ = 55582464000. Its totient is φ = 5836156368.

The previous prime is 20426551351. The next prime is 20426551463. The reversal of 20426551404 is 40415562402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2477244 + ... + 2485475.

It is an arithmetic number, because the mean of its divisors is an integer number (1157968000).

Almost surely, 2^20426551404 is an apocalyptic number.

It is an amenable number.

20426551404 is an abundant number, since it is smaller than the sum of its proper divisors (35155912596).

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

20426551404 is a wasteful number, since it uses less digits than its factorization.

20426551404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4962747 (or 4962731 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The spelling of 20426551404 in words is "twenty billion, four hundred twenty-six million, five hundred fifty-one thousand, four hundred four".