149161223471 has 16 divisors (see below), whose sum is σ = 172280031840. Its totient is φ = 127979429760.

The previous prime is 149161223441. The next prime is 149161223537. The reversal of 149161223471 is 174322161941.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-149161223471 is a prime.

It is a super-3 number, since 3×149161223471³ (a number of 34 digits) contains 333 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 (149161223401) 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, 5684000 + ... + 5710181.

It is an arithmetic number, because the mean of its divisors is an integer number (10767501990).

Almost surely, 2^149161223471 is an apocalyptic number.

149161223471 is a deficient number, since it is larger than the sum of its proper divisors (23118808369).

149161223471 is a wasteful number, since it uses less digits than its factorization.

149161223471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11394266.

The product of its digits is 72576, while the sum is 41.

The spelling of 149161223471 in words is "one hundred forty-nine billion, one hundred sixty-one million, two hundred twenty-three thousand, four hundred seventy-one".