20354131050 has 192 divisors, whose sum is σ = 57132736128. Its totient is φ = 4752000000.

The previous prime is 20354131043. The next prime is 20354131051. The reversal of 20354131050 is 5013145302.

It is a self number, because there is not a number n which added to its sum of digits gives 20354131050.

It is not an unprimeable number, because it can be changed into a prime (20354131051) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6164400 + ... + 6167700.

It is an arithmetic number, because the mean of its divisors is an integer number (297566334).

Almost surely, 2^20354131050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20354131050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28566368064).

20354131050 is an abundant number, since it is smaller than the sum of its proper divisors (36778605078).

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

20354131050 is a wasteful number, since it uses less digits than its factorization.

20354131050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3465 (or 3460 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 20354131050 its reverse (5013145302), we get a palindrome (25367276352).

The spelling of 20354131050 in words is "twenty billion, three hundred fifty-four million, one hundred thirty-one thousand, fifty".