1240502134551 has 32 divisors (see below), whose sum is σ = 1757634508800. Its totient is φ = 776017104480.

The previous prime is 1240502134541. The next prime is 1240502134579. The reversal of 1240502134551 is 1554312050421.

It is not a de Polignac number, because 1240502134551 - 2³⁴ = 1223322265367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240502134511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43648536 + ... + 43676946.

It is an arithmetic number, because the mean of its divisors is an integer number (54926078400).

Almost surely, 2^{1240502134551} is an apocalyptic number.

1240502134551 is a deficient number, since it is larger than the sum of its proper divisors (517132374249).

1240502134551 is a wasteful number, since it uses less digits than its factorization.

1240502134551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35699.

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 1240502134551 its reverse (1554312050421), we get a palindrome (2794814184972).

The spelling of 1240502134551 in words is "one trillion, two hundred forty billion, five hundred two million, one hundred thirty-four thousand, five hundred fifty-one".