149109172801 has 4 divisors (see below), whose sum is σ = 149115477204. Its totient is φ = 149102868400.

The previous prime is 149109172789. The next prime is 149109172829. The reversal of 149109172801 is 108271901941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 108271901941 = 7 ⋅15467414563.

It can be written as a sum of positive squares in 2 ways, for example, as 148840868401 + 268304400 = 385799^2 + 16380^2 .

It is a cyclic number.

It is not a de Polignac number, because 149109172801 - 2⁷ = 149109172673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149109172831) 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, 3116590 + ... + 3164071.

It is an arithmetic number, because the mean of its divisors is an integer number (37278869301).

Almost surely, 2^149109172801 is an apocalyptic number.

It is an amenable number.

149109172801 is a deficient number, since it is larger than the sum of its proper divisors (6304403).

149109172801 is an equidigital number, since it uses as much as digits as its factorization.

149109172801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6304402.

The product of its (nonzero) digits is 36288, while the sum is 43.

The spelling of 149109172801 in words is "one hundred forty-nine billion, one hundred nine million, one hundred seventy-two thousand, eight hundred one".