1138247055264 has 144 divisors (see below), whose sum is σ = 3368066456160. Its totient is φ = 333796492800.

The previous prime is 1138247055263. The next prime is 1138247055301. The reversal of 1138247055264 is 4625507428311.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1138247055263) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 454002 + ... + 1575630.

It is an arithmetic number, because the mean of its divisors is an integer number (23389350390).

Almost surely, 2^{1138247055264} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1138247055264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1684033228080).

1138247055264 is an abundant number, since it is smaller than the sum of its proper divisors (2229819400896).

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

1138247055264 is a wasteful number, since it uses less digits than its factorization.

1138247055264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121715 (or 1121676 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 1138247055264 in words is "one trillion, one hundred thirty-eight billion, two hundred forty-seven million, fifty-five thousand, two hundred sixty-four".