20154843404 has 12 divisors (see below), whose sum is σ = 35274064728. Its totient is φ = 10076539200.

The previous prime is 20154843403. The next prime is 20154843407. The reversal of 20154843404 is 40434845102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20154843403) 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, 167837 + ... + 261684.

It is an arithmetic number, because the mean of its divisors is an integer number (2939505394).

Almost surely, 2^20154843404 is an apocalyptic number.

It is an amenable number.

20154843404 is a deficient number, since it is larger than the sum of its proper divisors (15119221324).

20154843404 is a wasteful number, since it uses less digits than its factorization.

20154843404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441256 (or 441254 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 35.

The spelling of 20154843404 in words is "twenty billion, one hundred fifty-four million, eight hundred forty-three thousand, four hundred four".