2066451547 has 2 divisors, whose sum is σ = 2066451548. Its totient is φ = 2066451546.

The previous prime is 2066451529. The next prime is 2066451551. The reversal of 2066451547 is 7451546602.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2066451547 - 2¹¹ = 2066449499 is a prime.

It is not a weakly prime, because it can be changed into another prime (2066454547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033225773 + 1033225774.

It is an arithmetic number, because the mean of its divisors is an integer number (1033225774).

Almost surely, 2^2066451547 is an apocalyptic number.

2066451547 is a deficient number, since it is larger than the sum of its proper divisors (1).

2066451547 is an equidigital number, since it uses as much as digits as its factorization.

2066451547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 2066451547 is about 45458.2395941594. The cubic root of 2066451547 is about 1273.7232477689.

The spelling of 2066451547 in words is "two billion, sixty-six million, four hundred fifty-one thousand, five hundred forty-seven".