48827731621 has 2 divisors, whose sum is σ = 48827731622. Its totient is φ = 48827731620.

The previous prime is 48827731543. The next prime is 48827731643. The reversal of 48827731621 is 12613772884.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36515388100 + 12312343521 = 191090^2 + 110961^2 .

It is a cyclic number.

It is not a de Polignac number, because 48827731621 - 2⁷ = 48827731493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48827731661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24413865810 + 24413865811.

It is an arithmetic number, because the mean of its divisors is an integer number (24413865811).

Almost surely, 2^48827731621 is an apocalyptic number.

It is an amenable number.

48827731621 is a deficient number, since it is larger than the sum of its proper divisors (1).

48827731621 is an equidigital number, since it uses as much as digits as its factorization.

48827731621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 903168, while the sum is 49.

The spelling of 48827731621 in words is "forty-eight billion, eight hundred twenty-seven million, seven hundred thirty-one thousand, six hundred twenty-one".