2666402051 has 2 divisors, whose sum is σ = 2666402052. Its totient is φ = 2666402050.

The previous prime is 2666402047. The next prime is 2666402059. The reversal of 2666402051 is 1502046662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2666402051 - 2² = 2666402047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2666401999 and 2666402017.

It is not a weakly prime, because it can be changed into another prime (2666402059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333201025 + 1333201026.

It is an arithmetic number, because the mean of its divisors is an integer number (1333201026).

Almost surely, 2^2666402051 is an apocalyptic number.

2666402051 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666402051 is an equidigital number, since it uses as much as digits as its factorization.

2666402051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 2666402051 is about 51637.2157556931. The cubic root of 2666402051 is about 1386.6766786200.

The spelling of 2666402051 in words is "two billion, six hundred sixty-six million, four hundred two thousand, fifty-one".