20023415154 has 24 divisors (see below), whose sum is σ = 43438531500. Its totient is φ = 6666092448.

The previous prime is 20023415119. The next prime is 20023415161. The reversal of 20023415154 is 45151432002.

It can be written as a sum of positive squares in 2 ways, for example, as 20012346225 + 11068929 = 141465^2 + 3327^2 .

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 11 ways as a sum of consecutive naturals, for example, 683529 + ... + 712220.

Almost surely, 2^20023415154 is an apocalyptic number.

20023415154 is an abundant number, since it is smaller than the sum of its proper divisors (23415116346).

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

20023415154 is a wasteful number, since it uses less digits than its factorization.

20023415154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396554 (or 1396551 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 20023415154 its reverse (45151432002), we get a palindrome (65174847156).

The spelling of 20023415154 in words is "twenty billion, twenty-three million, four hundred fifteen thousand, one hundred fifty-four".