8148750521 has 2 divisors, whose sum is σ = 8148750522. Its totient is φ = 8148750520.

The previous prime is 8148750509. The next prime is 8148750553. The reversal of 8148750521 is 1250578418.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7843759225 + 304991296 = 88565^2 + 17464^2 .

It is a cyclic number.

It is not a de Polignac number, because 8148750521 - 2¹⁸ = 8148488377 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8148758521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4074375260 + 4074375261.

It is an arithmetic number, because the mean of its divisors is an integer number (4074375261).

Almost surely, 2^8148750521 is an apocalyptic number.

It is an amenable number.

8148750521 is a deficient number, since it is larger than the sum of its proper divisors (1).

8148750521 is an equidigital number, since it uses as much as digits as its factorization.

8148750521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 89600, while the sum is 41.

The square root of 8148750521 is about 90270.4299369400. The cubic root of 8148750521 is about 2012.3198317987.

The spelling of 8148750521 in words is "eight billion, one hundred forty-eight million, seven hundred fifty thousand, five hundred twenty-one".