1227491748000 has 864 divisors, whose sum is σ = 5231316400128. Its totient is φ = 271506816000.

The previous prime is 1227491747983. The next prime is 1227491748019. The reversal of 1227491748000 is 8471947221.

1227491748000 is a `hidden beast` number, since 12 + 2 + 7 + 491 + 74 + 80 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 54672777 + ... + 54695223.

It is an arithmetic number, because the mean of its divisors is an integer number (6054764352).

Almost surely, 2^{1227491748000} is an apocalyptic number.

1227491748000 is a gapful number since it is divisible by the number (10) 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 1227491748000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2615658200064).

1227491748000 is an abundant number, since it is smaller than the sum of its proper divisors (4003824652128).

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

1227491748000 is a wasteful number, since it uses less digits than its factorization.

1227491748000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22523 (or 22495 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 1227491748000 in words is "one trillion, two hundred twenty-seven billion, four hundred ninety-one million, seven hundred forty-eight thousand".