20051012431550 has 24 divisors (see below), whose sum is σ = 37588543631616. Its totient is φ = 7957252175040.

The previous prime is 20051012431547. The next prime is 20051012431579. The reversal of 20051012431550 is 5513421015002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1578813527 + ... + 1578826226.

It is an arithmetic number, because the mean of its divisors is an integer number (1566189317984).

Almost surely, 2^{20051012431550} is an apocalyptic number.

20051012431550 is a deficient number, since it is larger than the sum of its proper divisors (17537531200066).

20051012431550 is a wasteful number, since it uses less digits than its factorization.

20051012431550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157639892 (or 3157639887 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 20051012431550 its reverse (5513421015002), we get a palindrome (25564433446552).

The spelling of 20051012431550 in words is "twenty trillion, fifty-one billion, twelve million, four hundred thirty-one thousand, five hundred fifty".