1149864357888 has 156 divisors (see below), whose sum is σ = 3392098595808. Its totient is φ = 375132487680.

The previous prime is 1149864357883. The next prime is 1149864357911. The reversal of 1149864357888 is 8887534689411.

It is a happy number.

1149864357888 is a `hidden beast` number, since 1 + 1 + 4 + 9 + 8 + 6 + 43 + 578 + 8 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (1149864357883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1400778 + ... + 2064438.

It is an arithmetic number, because the mean of its divisors is an integer number (21744221768).

Almost surely, 2^{1149864357888} is an apocalyptic number.

1149864357888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1149864357888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1696049297904).

1149864357888 is an abundant number, since it is smaller than the sum of its proper divisors (2242234237920).

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

1149864357888 is an equidigital number, since it uses as much as digits as its factorization.

1149864357888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663738 (or 663713 counting only the distinct ones).

The product of its digits is 371589120, while the sum is 72.

The spelling of 1149864357888 in words is "one trillion, one hundred forty-nine billion, eight hundred sixty-four million, three hundred fifty-seven thousand, eight hundred eighty-eight".