20423401350 has 192 divisors, whose sum is σ = 59081218560. Its totient is φ = 4613990400.

The previous prime is 20423401343. The next prime is 20423401387. The reversal of 20423401350 is 5310432402.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20423401350.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2885616 + ... + 2892684.

It is an arithmetic number, because the mean of its divisors is an integer number (307714680).

Almost surely, 2^20423401350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20423401350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29540609280).

20423401350 is an abundant number, since it is smaller than the sum of its proper divisors (38657817210).

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

20423401350 is a wasteful number, since it uses less digits than its factorization.

20423401350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7215 (or 7210 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 20423401350 its reverse (5310432402), we get a palindrome (25733833752).

The spelling of 20423401350 in words is "twenty billion, four hundred twenty-three million, four hundred one thousand, three hundred fifty".