742568005991 has 16 divisors (see below), whose sum is σ = 855201017088. Its totient is φ = 631573800000.

The previous prime is 742568005967. The next prime is 742568006009. The reversal of 742568005991 is 199500865247.

It is a cyclic number.

It is not a de Polignac number, because 742568005991 - 2¹⁴ = 742567989607 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 (742568005391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13473491 + ... + 13528491.

It is an arithmetic number, because the mean of its divisors is an integer number (53450063568).

Almost surely, 2^742568005991 is an apocalyptic number.

742568005991 is a deficient number, since it is larger than the sum of its proper divisors (112633011097).

742568005991 is a wasteful number, since it uses less digits than its factorization.

742568005991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69862.

The product of its (nonzero) digits is 5443200, while the sum is 56.

The spelling of 742568005991 in words is "seven hundred forty-two billion, five hundred sixty-eight million, five thousand, nine hundred ninety-one".