1214860681440 has 864 divisors, whose sum is σ = 4957987926528. Its totient is φ = 265311590400.

The previous prime is 1214860681429. The next prime is 1214860681457. The reversal of 1214860681440 is 441860684121.

1214860681440 is a `hidden beast` number, since 1 + 2 + 148 + 6 + 0 + 68 + 1 + 440 = 666.

It is a super-2 number, since 2×1214860681440² (a number of 25 digits) contains 22 as substring.

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

It is a congruent number.

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, 804010285 + ... + 804011795.

It is an arithmetic number, because the mean of its divisors is an integer number (5738411952).

Almost surely, 2^{1214860681440} is an apocalyptic number.

1214860681440 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 1214860681440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2478993963264).

1214860681440 is an abundant number, since it is smaller than the sum of its proper divisors (3743127245088).

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

1214860681440 is a wasteful number, since it uses less digits than its factorization.

1214860681440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684 (or 1642 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The spelling of 1214860681440 in words is "one trillion, two hundred fourteen billion, eight hundred sixty million, six hundred eighty-one thousand, four hundred forty".