1227361237472 has 72 divisors (see below), whose sum is σ = 2539956804840. Its totient is φ = 583754307840.

The previous prime is 1227361237447. The next prime is 1227361237481. The reversal of 1227361237472 is 2747321637221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2863679 + ... + 3264257.

It is an arithmetic number, because the mean of its divisors is an integer number (35277177845).

Almost surely, 2^{1227361237472} 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 1227361237472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1269978402420).

1227361237472 is an abundant number, since it is smaller than the sum of its proper divisors (1312595567368).

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

1227361237472 is a wasteful number, since it uses less digits than its factorization.

1227361237472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400816 (or 400785 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 47.

The spelling of 1227361237472 in words is "one trillion, two hundred twenty-seven billion, three hundred sixty-one million, two hundred thirty-seven thousand, four hundred seventy-two".