376523878781 has 2 divisors, whose sum is σ = 376523878782. Its totient is φ = 376523878780.

The previous prime is 376523878723. The next prime is 376523878789. The reversal of 376523878781 is 187878325673.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311067214756 + 65456664025 = 557734^2 + 255845^2 .

It is a cyclic number.

It is not a de Polignac number, because 376523878781 - 2¹⁰ = 376523877757 is a prime.

It is a super-2 number, since 2×376523878781² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (376523878789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 188261939390 + 188261939391.

It is an arithmetic number, because the mean of its divisors is an integer number (188261939391).

Almost surely, 2^376523878781 is an apocalyptic number.

It is an amenable number.

376523878781 is a deficient number, since it is larger than the sum of its proper divisors (1).

376523878781 is an equidigital number, since it uses as much as digits as its factorization.

376523878781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94832640, while the sum is 65.

The spelling of 376523878781 in words is "three hundred seventy-six billion, five hundred twenty-three million, eight hundred seventy-eight thousand, seven hundred eighty-one".