1227865848240 has 160 divisors (see below), whose sum is σ = 3830610825216. Its totient is φ = 325352401920.

The previous prime is 1227865848211. The next prime is 1227865848241. The reversal of 1227865848240 is 428485687221.

It is a super-2 number, since 2×1227865848240² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1227865848241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28933117 + ... + 28975523.

Almost surely, 2^{1227865848240} is an apocalyptic number.

1227865848240 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 1227865848240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1915305412608).

1227865848240 is an abundant number, since it is smaller than the sum of its proper divisors (2602744976976).

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

1227865848240 is a wasteful number, since it uses less digits than its factorization.

1227865848240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43187 (or 43181 counting only the distinct ones).

The product of its (nonzero) digits is 13762560, while the sum is 57.

The spelling of 1227865848240 in words is "one trillion, two hundred twenty-seven billion, eight hundred sixty-five million, eight hundred forty-eight thousand, two hundred forty".