783455700867877 has 2 divisors, whose sum is σ = 783455700867878. Its totient is φ = 783455700867876.

The previous prime is 783455700867811. The next prime is 783455700867929. The reversal of 783455700867877 is 778768007554387.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 780886473367716 + 2569227500161 = 27944346^2 + 1602881^2 .

It is an emirp because it is prime and its reverse (778768007554387) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 783455700867877 - 2²³ = 783455692479269 is a prime.

It is a super-2 number, since 2×783455700867877² (a number of 31 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 783455700867877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (783455700861877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391727850433938 + 391727850433939.

It is an arithmetic number, because the mean of its divisors is an integer number (391727850433939).

Almost surely, 2^{783455700867877} is an apocalyptic number.

It is an amenable number.

783455700867877 is a deficient number, since it is larger than the sum of its proper divisors (1).

783455700867877 is an equidigital number, since it uses as much as digits as its factorization.

783455700867877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15489331200, while the sum is 82.

The spelling of 783455700867877 in words is "seven hundred eighty-three trillion, four hundred fifty-five billion, seven hundred million, eight hundred sixty-seven thousand, eight hundred seventy-seven".