1131343421640 has 64 divisors (see below), whose sum is σ = 3401298164160. Its totient is φ = 301045543680.

The previous prime is 1131343421623. The next prime is 1131343421687. The reversal of 1131343421640 is 461243431311.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10038031 + ... + 10150110.

It is an arithmetic number, because the mean of its divisors is an integer number (53145283815).

Almost surely, 2^{1131343421640} is an apocalyptic number.

1131343421640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131343421640 is an abundant number, since it is smaller than the sum of its proper divisors (2269954742520).

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

1131343421640 is a wasteful number, since it uses less digits than its factorization.

1131343421640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20188622 (or 20188618 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

Adding to 1131343421640 its reverse (461243431311), we get a palindrome (1592586852951).

The spelling of 1131343421640 in words is "one trillion, one hundred thirty-one billion, three hundred forty-three million, four hundred twenty-one thousand, six hundred forty".