8351624881 has 2 divisors, whose sum is σ = 8351624882. Its totient is φ = 8351624880.

The previous prime is 8351624837. The next prime is 8351624893. The reversal of 8351624881 is 1884261538.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4892303025 + 3459321856 = 69945^2 + 58816^2 .

It is a cyclic number.

It is not a de Polignac number, because 8351624881 - 2¹⁷ = 8351493809 is a prime.

It is a super-2 number, since 2×8351624881² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8351624821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4175812440 + 4175812441.

It is an arithmetic number, because the mean of its divisors is an integer number (4175812441).

Almost surely, 2^8351624881 is an apocalyptic number.

It is an amenable number.

8351624881 is a deficient number, since it is larger than the sum of its proper divisors (1).

8351624881 is an equidigital number, since it uses as much as digits as its factorization.

8351624881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 368640, while the sum is 46.

The square root of 8351624881 is about 91387.2249332476. The cubic root of 8351624881 is about 2028.8829530223.

The spelling of 8351624881 in words is "eight billion, three hundred fifty-one million, six hundred twenty-four thousand, eight hundred eighty-one".