149728721319 has 16 divisors (see below), whose sum is σ = 222788984800. Its totient is φ = 99383251968.

The previous prime is 149728721309. The next prime is 149728721327. The reversal of 149728721319 is 913127827941.

149728721319 is a `hidden beast` number, since 1 + 49 + 7 + 287 + 2 + 1 + 319 = 666.

It is not a de Polignac number, because 149728721319 - 2¹² = 149728717223 is a prime.

It is a super-2 number, since 2×149728721319² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149728721309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12101914 + ... + 12114279.

It is an arithmetic number, because the mean of its divisors is an integer number (13924311550).

Almost surely, 2^149728721319 is an apocalyptic number.

149728721319 is a deficient number, since it is larger than the sum of its proper divisors (73060263481).

149728721319 is a wasteful number, since it uses less digits than its factorization.

149728721319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24216431 (or 24216425 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The spelling of 149728721319 in words is "one hundred forty-nine billion, seven hundred twenty-eight million, seven hundred twenty-one thousand, three hundred nineteen".