48891016821 has 16 divisors (see below), whose sum is σ = 67011392448. Its totient is φ = 31683945600.

The previous prime is 48891016777. The next prime is 48891016831. The reversal of 48891016821 is 12861019884.

48891016821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 48891016821 - 2²³ = 48882628213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48891016831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80760 + ... + 322961.

It is an arithmetic number, because the mean of its divisors is an integer number (4188212028).

Almost surely, 2^48891016821 is an apocalyptic number.

It is an amenable number.

48891016821 is a deficient number, since it is larger than the sum of its proper divisors (18120375627).

48891016821 is a wasteful number, since it uses less digits than its factorization.

48891016821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404852.

The product of its (nonzero) digits is 221184, while the sum is 48.

The spelling of 48891016821 in words is "forty-eight billion, eight hundred ninety-one million, sixteen thousand, eight hundred twenty-one".