171400885783 has 2 divisors, whose sum is σ = 171400885784. Its totient is φ = 171400885782.

The previous prime is 171400885771. The next prime is 171400885787. The reversal of 171400885783 is 387588004171.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171400885783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 171400885783.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171400885787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85700442891 + 85700442892.

It is an arithmetic number, because the mean of its divisors is an integer number (85700442892).

Almost surely, 2^171400885783 is an apocalyptic number.

171400885783 is a deficient number, since it is larger than the sum of its proper divisors (1).

171400885783 is an equidigital number, since it uses as much as digits as its factorization.

171400885783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1505280, while the sum is 52.

The spelling of 171400885783 in words is "one hundred seventy-one billion, four hundred million, eight hundred eighty-five thousand, seven hundred eighty-three".