149968579591 has 4 divisors (see below), whose sum is σ = 149982030000. Its totient is φ = 149955129184.

The previous prime is 149968579589. The next prime is 149968579637. The reversal of 149968579591 is 195975869941.

149968579591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 149968579591 - 2¹ = 149968579589 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 (149968579291) 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, 6708466 + ... + 6730783.

It is an arithmetic number, because the mean of its divisors is an integer number (37495507500).

Almost surely, 2^149968579591 is an apocalyptic number.

149968579591 is a deficient number, since it is larger than the sum of its proper divisors (13450409).

149968579591 is a wasteful number, since it uses less digits than its factorization.

149968579591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13450408.

The product of its digits is 220449600, while the sum is 73.

The spelling of 149968579591 in words is "one hundred forty-nine billion, nine hundred sixty-eight million, five hundred seventy-nine thousand, five hundred ninety-one".