1213411501440 has 512 divisors, whose sum is σ = 4388351385600. Its totient is φ = 316806561792.

The previous prime is 1213411501403. The next prime is 1213411501451. The reversal of 1213411501440 is 441051143121.

It is a happy number.

1213411501440 is a `hidden beast` number, since 1 + 213 + 4 + 1 + 1 + 5 + 0 + 1 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 162065377 + ... + 162072863.

It is an arithmetic number, because the mean of its divisors is an integer number (8570998800).

Almost surely, 2^{1213411501440} is an apocalyptic number.

1213411501440 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 1213411501440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2194175692800).

1213411501440 is an abundant number, since it is smaller than the sum of its proper divisors (3174939884160).

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

1213411501440 is a wasteful number, since it uses less digits than its factorization.

1213411501440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7711 (or 7693 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 1213411501440 its reverse (441051143121), we get a palindrome (1654462644561).

The spelling of 1213411501440 in words is "one trillion, two hundred thirteen billion, four hundred eleven million, five hundred one thousand, four hundred forty".