149721705319 has 4 divisors (see below), whose sum is σ = 149745678544. Its totient is φ = 149697732096.

The previous prime is 149721705317. The next prime is 149721705347. The reversal of 149721705319 is 913507127941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 913507127941 = 178231 ⋅5125411.

It is a cyclic number.

It is not a de Polignac number, because 149721705319 - 2¹ = 149721705317 is a prime.

It is a super-2 number, since 2×149721705319² (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 (149721705313) 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, 11977242 + ... + 11989735.

It is an arithmetic number, because the mean of its divisors is an integer number (37436419636).

Almost surely, 2^149721705319 is an apocalyptic number.

149721705319 is a deficient number, since it is larger than the sum of its proper divisors (23973225).

149721705319 is an equidigital number, since it uses as much as digits as its factorization.

149721705319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23973224.

The product of its (nonzero) digits is 476280, while the sum is 49.

The spelling of 149721705319 in words is "one hundred forty-nine billion, seven hundred twenty-one million, seven hundred five thousand, three hundred nineteen".