240442151491 has 2 divisors, whose sum is σ = 240442151492. Its totient is φ = 240442151490.

The previous prime is 240442151441. The next prime is 240442151503. The reversal of 240442151491 is 194151244042.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 240442151491 - 2¹⁵ = 240442118723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240442151491.

It is not a weakly prime, because it can be changed into another prime (240442151441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120221075745 + 120221075746.

It is an arithmetic number, because the mean of its divisors is an integer number (120221075746).

Almost surely, 2^240442151491 is an apocalyptic number.

240442151491 is a deficient number, since it is larger than the sum of its proper divisors (1).

240442151491 is an equidigital number, since it uses as much as digits as its factorization.

240442151491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 240442151491 in words is "two hundred forty billion, four hundred forty-two million, one hundred fifty-one thousand, four hundred ninety-one".