7666554451 has 2 divisors, whose sum is σ = 7666554452. Its totient is φ = 7666554450.

The previous prime is 7666554383. The next prime is 7666554487. The reversal of 7666554451 is 1544556667.

It is a strong prime.

It is an emirp because it is prime and its reverse (1544556667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7666554451 - 2²³ = 7658165843 is a prime.

It is a super-2 number, since 2×7666554451² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7666554395 and 7666554404.

It is not a weakly prime, because it can be changed into another prime (7666524451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3833277225 + 3833277226.

It is an arithmetic number, because the mean of its divisors is an integer number (3833277226).

Almost surely, 2^7666554451 is an apocalyptic number.

7666554451 is a deficient number, since it is larger than the sum of its proper divisors (1).

7666554451 is an equidigital number, since it uses as much as digits as its factorization.

7666554451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024000, while the sum is 49.

The square root of 7666554451 is about 87558.8627781334. The cubic root of 7666554451 is about 1971.8176127559.

The spelling of 7666554451 in words is "seven billion, six hundred sixty-six million, five hundred fifty-four thousand, four hundred fifty-one".