149999011123 has 4 divisors (see below), whose sum is σ = 161537396608. Its totient is φ = 138460625640.

The previous prime is 149999011109. The next prime is 149999011187. The reversal of 149999011123 is 321110999941.

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 149999011123 - 2⁵ = 149999011091 is a prime.

It is a super-2 number, since 2×149999011123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149999011193) 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, 5769192723 + ... + 5769192748.

It is an arithmetic number, because the mean of its divisors is an integer number (40384349152).

Almost surely, 2^149999011123 is an apocalyptic number.

149999011123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

149999011123 is a deficient number, since it is larger than the sum of its proper divisors (11538385485).

149999011123 is a wasteful number, since it uses less digits than its factorization.

149999011123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11538385484.

The product of its (nonzero) digits is 157464, while the sum is 49.

The spelling of 149999011123 in words is "one hundred forty-nine billion, nine hundred ninety-nine million, eleven thousand, one hundred twenty-three".