148040838821 has 4 divisors (see below), whose sum is σ = 148047145152. Its totient is φ = 148034532492.

The previous prime is 148040838793. The next prime is 148040838833. The reversal of 148040838821 is 128838040841.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 128838040841 = 178307 ⋅722563.

It is a cyclic number.

It is not a de Polignac number, because 148040838821 - 2³⁴ = 130860969637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148040838221) 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, 3117821 + ... + 3164946.

It is an arithmetic number, because the mean of its divisors is an integer number (37011786288).

Almost surely, 2^148040838821 is an apocalyptic number.

It is an amenable number.

148040838821 is a deficient number, since it is larger than the sum of its proper divisors (6306331).

148040838821 is an equidigital number, since it uses as much as digits as its factorization.

148040838821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6306330.

The product of its (nonzero) digits is 393216, while the sum is 47.

The spelling of 148040838821 in words is "one hundred forty-eight billion, forty million, eight hundred thirty-eight thousand, eight hundred twenty-one".