148040386661 has 4 divisors (see below), whose sum is σ = 148464571500. Its totient is φ = 147616201824.

The previous prime is 148040386607. The next prime is 148040386691. The reversal of 148040386661 is 166683040841.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 114071685025 + 33968701636 = 337745^2 + 184306^2 .

It is a cyclic number.

It is not a de Polignac number, because 148040386661 - 2¹⁸ = 148040124517 is a prime.

It is a super-3 number, since 3×148040386661³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148040386691) 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, 212091896 + ... + 212092593.

It is an arithmetic number, because the mean of its divisors is an integer number (37116142875).

Almost surely, 2^148040386661 is an apocalyptic number.

It is an amenable number.

148040386661 is a deficient number, since it is larger than the sum of its proper divisors (424184839).

148040386661 is an equidigital number, since it uses as much as digits as its factorization.

148040386661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424184838.

The product of its (nonzero) digits is 663552, while the sum is 47.

The spelling of 148040386661 in words is "one hundred forty-eight billion, forty million, three hundred eighty-six thousand, six hundred sixty-one".