48149633821 has 4 divisors (see below), whose sum is σ = 49058117532. Its totient is φ = 47241150112.

The previous prime is 48149633803. The next prime is 48149633827. The reversal of 48149633821 is 12833694184.

It is a happy number.

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 14398800025 + 33750833796 = 119995^2 + 183714^2 .

It is a cyclic number.

It is not a de Polignac number, because 48149633821 - 2⁵ = 48149633789 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 (48149633827) 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, 454241776 + ... + 454241881.

It is an arithmetic number, because the mean of its divisors is an integer number (12264529383).

Almost surely, 2^48149633821 is an apocalyptic number.

It is an amenable number.

48149633821 is a deficient number, since it is larger than the sum of its proper divisors (908483711).

48149633821 is an equidigital number, since it uses as much as digits as its factorization.

48149633821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908483710.

The product of its digits is 995328, while the sum is 49.

The spelling of 48149633821 in words is "forty-eight billion, one hundred forty-nine million, six hundred thirty-three thousand, eight hundred twenty-one".