20405103054 has 32 divisors (see below), whose sum is σ = 46701920256. Its totient is φ = 5822318880.

The previous prime is 20405103011. The next prime is 20405103097. The reversal of 20405103054 is 45030150402.

It is an interprime number because it is at equal distance from previous prime (20405103011) and next prime (20405103097).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289102 + ... + 352689.

It is an arithmetic number, because the mean of its divisors is an integer number (1459435008).

Almost surely, 2^20405103054 is an apocalyptic number.

20405103054 is an abundant number, since it is smaller than the sum of its proper divisors (26296817202).

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

20405103054 is a wasteful number, since it uses less digits than its factorization.

20405103054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642560.

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 20405103054 its reverse (45030150402), we get a palindrome (65435253456).

The spelling of 20405103054 in words is "twenty billion, four hundred five million, one hundred three thousand, fifty-four".