1143403400520 has 96 divisors (see below), whose sum is σ = 3934652899320. Its totient is φ = 286971832320.

The previous prime is 1143403400519. The next prime is 1143403400539. The reversal of 1143403400520 is 250043043411.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1087719671844 + 55683728676 = 1042938^2 + 235974^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93409191 + ... + 93421430.

Almost surely, 2^{1143403400520} is an apocalyptic number.

1143403400520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143403400520 is an abundant number, since it is smaller than the sum of its proper divisors (2791249498800).

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

1143403400520 is a wasteful number, since it uses less digits than its factorization.

1143403400520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186830655 (or 186830648 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 1143403400520 its reverse (250043043411), we get a palindrome (1393446443931).

The spelling of 1143403400520 in words is "one trillion, one hundred forty-three billion, four hundred three million, four hundred thousand, five hundred twenty".