8680445551 has 2 divisors, whose sum is σ = 8680445552. Its totient is φ = 8680445550.

The previous prime is 8680445491. The next prime is 8680445567. The reversal of 8680445551 is 1555440868.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8680445551 - 2²⁹ = 8143574639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8680445591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4340222775 + 4340222776.

It is an arithmetic number, because the mean of its divisors is an integer number (4340222776).

Almost surely, 2^8680445551 is an apocalyptic number.

8680445551 is a deficient number, since it is larger than the sum of its proper divisors (1).

8680445551 is an equidigital number, since it uses as much as digits as its factorization.

8680445551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768000, while the sum is 46.

The square root of 8680445551 is about 93168.9087142272. The cubic root of 8680445551 is about 2055.1680471460.

It can be divided in two parts, 86804 and 45551, that added together give a triangular number (132355 = T₅₁₄).

The spelling of 8680445551 in words is "eight billion, six hundred eighty million, four hundred forty-five thousand, five hundred fifty-one".