2166070072451 has 2 divisors, whose sum is σ = 2166070072452. Its totient is φ = 2166070072450.

The previous prime is 2166070072447. The next prime is 2166070072469. The reversal of 2166070072451 is 1542700706612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2166070072451 - 2² = 2166070072447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2166070072399 and 2166070072408.

It is not a weakly prime, because it can be changed into another prime (2166070072651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083035036225 + 1083035036226.

It is an arithmetic number, because the mean of its divisors is an integer number (1083035036226).

Almost surely, 2^{2166070072451} is an apocalyptic number.

2166070072451 is a deficient number, since it is larger than the sum of its proper divisors (1).

2166070072451 is an equidigital number, since it uses as much as digits as its factorization.

2166070072451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 2166070072451 in words is "two trillion, one hundred sixty-six billion, seventy million, seventy-two thousand, four hundred fifty-one".