1142645442464 has 24 divisors (see below), whose sum is σ = 2381911640388. Its totient is φ = 537715502080.

The previous prime is 1142645442461. The next prime is 1142645442539. The reversal of 1142645442464 is 4642445462411.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 873305202064 + 269340240400 = 934508^2 + 518980^2 .

It is not an unprimeable number, because it can be changed into a prime (1142645442461) 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, 1050225047 + ... + 1050226134.

Almost surely, 2^{1142645442464} is an apocalyptic number.

It is an amenable number.

1142645442464 is an abundant number, since it is smaller than the sum of its proper divisors (1239266197924).

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

1142645442464 is a wasteful number, since it uses less digits than its factorization.

1142645442464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100451208 (or 2100451200 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 47.

The spelling of 1142645442464 in words is "one trillion, one hundred forty-two billion, six hundred forty-five million, four hundred forty-two thousand, four hundred sixty-four".