691047150107 has 2 divisors, whose sum is σ = 691047150108. Its totient is φ = 691047150106.

The previous prime is 691047150097. The next prime is 691047150223. The reversal of 691047150107 is 701051740196.

691047150107 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 691047150107 - 2²⁴ = 691030372891 is a prime.

It is a super-4 number, since 4×691047150107⁴ (a number of 48 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (691067150107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345523575053 + 345523575054.

It is an arithmetic number, because the mean of its divisors is an integer number (345523575054).

Almost surely, 2^691047150107 is an apocalyptic number.

691047150107 is a deficient number, since it is larger than the sum of its proper divisors (1).

691047150107 is an equidigital number, since it uses as much as digits as its factorization.

691047150107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 41.

The spelling of 691047150107 in words is "six hundred ninety-one billion, forty-seven million, one hundred fifty thousand, one hundred seven".