2166062521451 has 2 divisors, whose sum is σ = 2166062521452. Its totient is φ = 2166062521450.

The previous prime is 2166062521397. The next prime is 2166062521517. The reversal of 2166062521451 is 1541252606612.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2166062521451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2166062521399 and 2166062521408.

It is not a weakly prime, because it can be changed into another prime (2166062521151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083031260725 + 1083031260726.

It is an arithmetic number, because the mean of its divisors is an integer number (1083031260726).

Almost surely, 2^{2166062521451} is an apocalyptic number.

2166062521451 is a deficient number, since it is larger than the sum of its proper divisors (1).

2166062521451 is an equidigital number, since it uses as much as digits as its factorization.

2166062521451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 2166062521451 in words is "two trillion, one hundred sixty-six billion, sixty-two million, five hundred twenty-one thousand, four hundred fifty-one".