148109172671 has 4 divisors (see below), whose sum is σ = 151260431712. Its totient is φ = 144957913632.

The previous prime is 148109172667. The next prime is 148109172697. The reversal of 148109172671 is 176271901841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 176271901841 = 7 ⋅25181700263.

It is a cyclic number.

It is not a de Polignac number, because 148109172671 - 2² = 148109172667 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 3151258993 = 148109172671 / (1 + 4 + 8 + 1 + 0 + 9 + 1 + 7 + 2 + 6 + 7 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148109174671) 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, 1575629450 + ... + 1575629543.

It is an arithmetic number, because the mean of its divisors is an integer number (37815107928).

Almost surely, 2^148109172671 is an apocalyptic number.

148109172671 is a deficient number, since it is larger than the sum of its proper divisors (3151259041).

148109172671 is an equidigital number, since it uses as much as digits as its factorization.

148109172671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3151259040.

The product of its (nonzero) digits is 169344, while the sum is 47.

The spelling of 148109172671 in words is "one hundred forty-eight billion, one hundred nine million, one hundred seventy-two thousand, six hundred seventy-one".