1240332321451 has 16 divisors (see below), whose sum is σ = 1299362549760. Its totient is φ = 1181728593760.

The previous prime is 1240332321409. The next prime is 1240332321461. The reversal of 1240332321451 is 1541232330421.

It is a cyclic number.

It is not a de Polignac number, because 1240332321451 - 2¹⁵ = 1240332288683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240332321461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83353830 + ... + 83368708.

It is an arithmetic number, because the mean of its divisors is an integer number (81210159360).

Almost surely, 2^{1240332321451} is an apocalyptic number.

1240332321451 is a deficient number, since it is larger than the sum of its proper divisors (59030228309).

1240332321451 is a wasteful number, since it uses less digits than its factorization.

1240332321451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28946.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 1240332321451 its reverse (1541232330421), we get a palindrome (2781564651872).

The spelling of 1240332321451 in words is "one trillion, two hundred forty billion, three hundred thirty-two million, three hundred twenty-one thousand, four hundred fifty-one".