51143403040 has 48 divisors (see below), whose sum is σ = 120996975960. Its totient is φ = 20428462080.

The previous prime is 51143403029. The next prime is 51143403061. The reversal of 51143403040 is 4030434115.

It can be written as a sum of positive squares in 4 ways, for example, as 24434691856 + 26708711184 = 156316^2 + 163428^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51143402996 and 51143403014.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111981 + ... + 338860.

Almost surely, 2^51143403040 is an apocalyptic number.

It is an amenable number.

51143403040 is an abundant number, since it is smaller than the sum of its proper divisors (69853572920).

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

51143403040 is a wasteful number, since it uses less digits than its factorization.

51143403040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451565 (or 451557 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 51143403040 its reverse (4030434115), we get a palindrome (55173837155).

The spelling of 51143403040 in words is "fifty-one billion, one hundred forty-three million, four hundred three thousand, forty".