148274315991 has 20 divisors (see below), whose sum is σ = 221508193104. Its totient is φ = 98844192000.

The previous prime is 148274315989. The next prime is 148274315999. The reversal of 148274315991 is 199513472841.

148274315991 is a `hidden beast` number, since 1 + 4 + 8 + 2 + 7 + 43 + 1 + 599 + 1 = 666.

It is not a de Polignac number, because 148274315991 - 2¹ = 148274315989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148274315999) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1951351 + ... + 2025911.

Almost surely, 2^148274315991 is an apocalyptic number.

148274315991 is a deficient number, since it is larger than the sum of its proper divisors (73233877113).

148274315991 is an equidigital number, since it uses as much as digits as its factorization.

148274315991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99124 (or 99115 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The spelling of 148274315991 in words is "one hundred forty-eight billion, two hundred seventy-four million, three hundred fifteen thousand, nine hundred ninety-one".