20401389054 has 32 divisors (see below), whose sum is σ = 45444672000. Its totient is φ = 6784225272.

The previous prime is 20401389011. The next prime is 20401389083. The reversal of 20401389054 is 45098310402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 428214 + ... + 473465.

It is an arithmetic number, because the mean of its divisors is an integer number (1420146000).

Almost surely, 2^20401389054 is an apocalyptic number.

20401389054 is an abundant number, since it is smaller than the sum of its proper divisors (25043282946).

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

20401389054 is a wasteful number, since it uses less digits than its factorization.

20401389054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902109 (or 902103 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

Adding to 20401389054 its reverse (45098310402), we get a palindrome (65499699456).

The spelling of 20401389054 in words is "twenty billion, four hundred one million, three hundred eighty-nine thousand, fifty-four".