149123443215321 has 9 divisors (see below), whose sum is σ = 215400582005791. Its totient is φ = 99415604386992.

The previous prime is 149123443215293. The next prime is 149123443215377. The reversal of 149123443215321 is 123512344321941.

The square root of 149123443215321 is 12211611.

It is a perfect power (a square), and thus also a powerful number.

149123443215321 is a `hidden beast` number, since 1 + 4 + 9 + 12 + 34 + 432 + 153 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 72653035505625 + 76470407709696 = 8523675^2 + 8744736^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 149123443215321 - 2⁵ = 149123443215289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149123443215391) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 34599565 + ... + 38670101.

Almost surely, 2^{149123443215321} is an apocalyptic number.

149123443215321 is the 12211611-st square number.

149123443215321 is the 6105806-th centered octagonal number.

It is an amenable number.

149123443215321 is a deficient number, since it is larger than the sum of its proper divisors (66277138790470).

149123443215321 is an frugal number, since it uses more digits than its factorization.

149123443215321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8141080 (or 4070540 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The spelling of 149123443215321 in words is "one hundred forty-nine trillion, one hundred twenty-three billion, four hundred forty-three million, two hundred fifteen thousand, three hundred twenty-one".