11505651667 has 2 divisors, whose sum is σ = 11505651668. Its totient is φ = 11505651666.

The previous prime is 11505651659. The next prime is 11505651673. The reversal of 11505651667 is 76615650511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11505651667 - 2³ = 11505651659 is a prime.

It is not a weakly prime, because it can be changed into another prime (11505651617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5752825833 + 5752825834.

It is an arithmetic number, because the mean of its divisors is an integer number (5752825834).

Almost surely, 2^11505651667 is an apocalyptic number.

11505651667 is a deficient number, since it is larger than the sum of its proper divisors (1).

11505651667 is an equidigital number, since it uses as much as digits as its factorization.

11505651667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189000, while the sum is 43.

The spelling of 11505651667 in words is "eleven billion, five hundred five million, six hundred fifty-one thousand, six hundred sixty-seven".