149471157123 has 24 divisors (see below), whose sum is σ = 217252709856. Its totient is φ = 99024710400.

The previous prime is 149471157091. The next prime is 149471157127. The reversal of 149471157123 is 321751174941.

149471157123 is a `hidden beast` number, since 1 + 4 + 9 + 4 + 71 + 1 + 571 + 2 + 3 = 666.

149471157123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 149471157123 - 2⁵ = 149471157091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149471157127) 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 23 ways as a sum of consecutive naturals, for example, 6934603 + ... + 6956123.

It is an arithmetic number, because the mean of its divisors is an integer number (9052196244).

Almost surely, 2^149471157123 is an apocalyptic number.

149471157123 is a deficient number, since it is larger than the sum of its proper divisors (67781552733).

149471157123 is a wasteful number, since it uses less digits than its factorization.

149471157123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26315 (or 26312 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The spelling of 149471157123 in words is "one hundred forty-nine billion, four hundred seventy-one million, one hundred fifty-seven thousand, one hundred twenty-three".