8621916451 has 2 divisors, whose sum is σ = 8621916452. Its totient is φ = 8621916450.

The previous prime is 8621916437. The next prime is 8621916487. The reversal of 8621916451 is 1546191268.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8621916451 - 2⁵ = 8621916419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8621916398 and 8621916407.

It is not a weakly prime, because it can be changed into another prime (8621916431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4310958225 + 4310958226.

It is an arithmetic number, because the mean of its divisors is an integer number (4310958226).

Almost surely, 2^8621916451 is an apocalyptic number.

8621916451 is a deficient number, since it is larger than the sum of its proper divisors (1).

8621916451 is an equidigital number, since it uses as much as digits as its factorization.

8621916451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 43.

The square root of 8621916451 is about 92854.2753512190. The cubic root of 8621916451 is about 2050.5385419136.

The spelling of 8621916451 in words is "eight billion, six hundred twenty-one million, nine hundred sixteen thousand, four hundred fifty-one".