51400203112 has 16 divisors (see below), whose sum is σ = 101447769600. Its totient is φ = 24347464560.

The previous prime is 51400203079. The next prime is 51400203119. The reversal of 51400203112 is 21130200415.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 51400203112.

It is not an unprimeable number, because it can be changed into a prime (51400203119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169079464 + ... + 169079767.

It is an arithmetic number, because the mean of its divisors is an integer number (6340485600).

Almost surely, 2^51400203112 is an apocalyptic number.

It is an amenable number.

51400203112 is a deficient number, since it is larger than the sum of its proper divisors (50047566488).

51400203112 is a wasteful number, since it uses less digits than its factorization.

51400203112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338159256 (or 338159252 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 51400203112 its reverse (21130200415), we get a palindrome (72530403527).

The spelling of 51400203112 in words is "fifty-one billion, four hundred million, two hundred three thousand, one hundred twelve".