20251440350 has 12 divisors (see below), whose sum is σ = 37667679144. Its totient is φ = 8100576120.

The previous prime is 20251440311. The next prime is 20251440467. The reversal of 20251440350 is 5304415202.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 202514354 + ... + 202514453.

It is an arithmetic number, because the mean of its divisors is an integer number (3138973262).

Almost surely, 2^20251440350 is an apocalyptic number.

20251440350 is a deficient number, since it is larger than the sum of its proper divisors (17416238794).

20251440350 is a wasteful number, since it uses less digits than its factorization.

20251440350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405028819 (or 405028814 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 20251440350 its reverse (5304415202), we get a palindrome (25555855552).

The spelling of 20251440350 in words is "twenty billion, two hundred fifty-one million, four hundred forty thousand, three hundred fifty".