1240725136151 has 4 divisors (see below), whose sum is σ = 1294669707312. Its totient is φ = 1186780564992.

The previous prime is 1240725136127. The next prime is 1240725136177. The reversal of 1240725136151 is 1516315270421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1240725136151 - 2⁶ = 1240725136087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240725136351) 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 3 ways as a sum of consecutive naturals, for example, 26972285546 + ... + 26972285591.

It is an arithmetic number, because the mean of its divisors is an integer number (323667426828).

Almost surely, 2^{1240725136151} is an apocalyptic number.

1240725136151 is a deficient number, since it is larger than the sum of its proper divisors (53944571161).

1240725136151 is an equidigital number, since it uses as much as digits as its factorization.

1240725136151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53944571160.

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 1240725136151 in words is "one trillion, two hundred forty billion, seven hundred twenty-five million, one hundred thirty-six thousand, one hundred fifty-one".