20400150344 has 48 divisors (see below), whose sum is σ = 44664766080. Its totient is φ = 8556850080.

The previous prime is 20400150289. The next prime is 20400150349. The reversal of 20400150344 is 44305100402.

It is a super-2 number, since 2×20400150344² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20400150349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41249 + ... + 206159.

It is an arithmetic number, because the mean of its divisors is an integer number (930515960).

Almost surely, 2^20400150344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20400150344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22332383040).

20400150344 is an abundant number, since it is smaller than the sum of its proper divisors (24264615736).

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

20400150344 is a wasteful number, since it uses less digits than its factorization.

20400150344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165018 (or 164967 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 20400150344 its reverse (44305100402), we get a palindrome (64705250746).

The spelling of 20400150344 in words is "twenty billion, four hundred million, one hundred fifty thousand, three hundred forty-four".