7051661711667 has 12 divisors (see below), whose sum is σ = 10185762090504. Its totient is φ = 4701094650720.

The previous prime is 7051661711657. The next prime is 7051661711707. The reversal of 7051661711667 is 7661171661507.

It is a happy number.

7051661711667 is a `hidden beast` number, since 7 + 0 + 5 + 1 + 6 + 617 + 1 + 16 + 6 + 7 = 666.

It is not a de Polignac number, because 7051661711667 - 2⁴ = 7051661711651 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (7051661711657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3172983 + ... + 4916415.

It is an arithmetic number, because the mean of its divisors is an integer number (848813507542).

Almost surely, 2^{7051661711667} is an apocalyptic number.

7051661711667 is a deficient number, since it is larger than the sum of its proper divisors (3134100378837).

7051661711667 is a wasteful number, since it uses less digits than its factorization.

7051661711667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192850 (or 2192847 counting only the distinct ones).

The product of its (nonzero) digits is 2222640, while the sum is 54.

The spelling of 7051661711667 in words is "seven trillion, fifty-one billion, six hundred sixty-one million, seven hundred eleven thousand, six hundred sixty-seven".