149172440198 has 16 divisors (see below), whose sum is σ = 224734777344. Its totient is φ = 74261383560.

The previous prime is 149172440171. The next prime is 149172440203. The reversal of 149172440198 is 891044271941.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426011 + ... + 692697.

It is an arithmetic number, because the mean of its divisors is an integer number (14045923584).

Almost surely, 2^149172440198 is an apocalyptic number.

149172440198 is a deficient number, since it is larger than the sum of its proper divisors (75562337146).

149172440198 is a wasteful number, since it uses less digits than its factorization.

149172440198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267907.

The product of its (nonzero) digits is 580608, while the sum is 50.

The spelling of 149172440198 in words is "one hundred forty-nine billion, one hundred seventy-two million, four hundred forty thousand, one hundred ninety-eight".