691147445201153 has 2 divisors, whose sum is σ = 691147445201154. Its totient is φ = 691147445201152.

The previous prime is 691147445201089. The next prime is 691147445201159. The reversal of 691147445201153 is 351102544741196.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 623619613030129 + 67527832171024 = 24972377^2 + 8217532^2 .

It is a cyclic number.

It is not a de Polignac number, because 691147445201153 - 2⁶ = 691147445201089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 691147445201095 and 691147445201104.

It is not a weakly prime, because it can be changed into another prime (691147445201159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345573722600576 + 345573722600577.

It is an arithmetic number, because the mean of its divisors is an integer number (345573722600577).

Almost surely, 2^{691147445201153} is an apocalyptic number.

It is an amenable number.

691147445201153 is a deficient number, since it is larger than the sum of its proper divisors (1).

691147445201153 is an equidigital number, since it uses as much as digits as its factorization.

691147445201153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 691147445201153 in words is "six hundred ninety-one trillion, one hundred forty-seven billion, four hundred forty-five million, two hundred one thousand, one hundred fifty-three".