147690081809 has 2 divisors, whose sum is σ = 147690081810. Its totient is φ = 147690081808.

The previous prime is 147690081779. The next prime is 147690081823. The reversal of 147690081809 is 908180096741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147323933584 + 366148225 = 383828^2 + 19135^2 .

It is a cyclic number.

It is not a de Polignac number, because 147690081809 - 2²⁸ = 147421646353 is a prime.

It is a super-2 number, since 2×147690081809² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (147690084809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73845040904 + 73845040905.

It is an arithmetic number, because the mean of its divisors is an integer number (73845040905).

Almost surely, 2^147690081809 is an apocalyptic number.

It is an amenable number.

147690081809 is a deficient number, since it is larger than the sum of its proper divisors (1).

147690081809 is an equidigital number, since it uses as much as digits as its factorization.

147690081809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 53.

The spelling of 147690081809 in words is "one hundred forty-seven billion, six hundred ninety million, eighty-one thousand, eight hundred nine".