197770541783 has 2 divisors, whose sum is σ = 197770541784. Its totient is φ = 197770541782.

The previous prime is 197770541723. The next prime is 197770541803. The reversal of 197770541783 is 387145077791.

It is a strong prime.

It is an emirp because it is prime and its reverse (387145077791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197770541783 - 2¹⁸ = 197770279639 is a prime.

It is a super-2 number, since 2×197770541783² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197770541723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98885270891 + 98885270892.

It is an arithmetic number, because the mean of its divisors is an integer number (98885270892).

Almost surely, 2^197770541783 is an apocalyptic number.

197770541783 is a deficient number, since it is larger than the sum of its proper divisors (1).

197770541783 is an equidigital number, since it uses as much as digits as its factorization.

197770541783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10372320, while the sum is 59.

The spelling of 197770541783 in words is "one hundred ninety-seven billion, seven hundred seventy million, five hundred forty-one thousand, seven hundred eighty-three".