149709537431999 has 4 divisors (see below), whose sum is σ = 149709927391680. Its totient is φ = 149709147472320.

The previous prime is 149709537431981. The next prime is 149709537432029. The reversal of 149709537431999 is 999134735907941.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149709537431999 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 (149709537401999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194403407 + ... + 195171984.

It is an arithmetic number, because the mean of its divisors is an integer number (37427481847920).

Almost surely, 2^{149709537431999} is an apocalyptic number.

149709537431999 is a deficient number, since it is larger than the sum of its proper divisors (389959681).

149709537431999 is an equidigital number, since it uses as much as digits as its factorization.

149709537431999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389959680.

The product of its (nonzero) digits is 2083248720, while the sum is 80.

The spelling of 149709537431999 in words is "one hundred forty-nine trillion, seven hundred nine billion, five hundred thirty-seven million, four hundred thirty-one thousand, nine hundred ninety-nine".