149508251709 has 4 divisors (see below), whose sum is σ = 199344335616. Its totient is φ = 99672167804.

The previous prime is 149508251689. The next prime is 149508251723. The reversal of 149508251709 is 907152805941.

149508251709 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 149508251709 - 2²³ = 149499863101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149508251759) 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, 24918041949 + ... + 24918041954.

It is an arithmetic number, because the mean of its divisors is an integer number (49836083904).

Almost surely, 2^149508251709 is an apocalyptic number.

It is an amenable number.

149508251709 is a deficient number, since it is larger than the sum of its proper divisors (49836083907).

149508251709 is an equidigital number, since it uses as much as digits as its factorization.

149508251709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49836083906.

The product of its (nonzero) digits is 907200, while the sum is 51.

The spelling of 149508251709 in words is "one hundred forty-nine billion, five hundred eight million, two hundred fifty-one thousand, seven hundred nine".