20341322154 has 80 divisors (see below), whose sum is σ = 48311951688. Its totient is φ = 6374827008.

The previous prime is 20341322149. The next prime is 20341322159. The reversal of 20341322154 is 45122314302.

20341322154 is a `hidden beast` number, since 20 + 3 + 413 + 221 + 5 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (20341322149) and next prime (20341322159).

It can be written as a sum of positive squares in 4 ways, for example, as 20341320129 + 2025 = 142623^2 + 45^2 .

It is a super-2 number, since 2×20341322154² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20341322159) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3017772 + ... + 3024504.

Almost surely, 2^20341322154 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20341322154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24155975844).

20341322154 is an abundant number, since it is smaller than the sum of its proper divisors (27970629534).

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

20341322154 is a wasteful number, since it uses less digits than its factorization.

20341322154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7861 (or 7852 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 20341322154 its reverse (45122314302), we get a palindrome (65463636456).

The spelling of 20341322154 in words is "twenty billion, three hundred forty-one million, three hundred twenty-two thousand, one hundred fifty-four".