87456376257457 has 2 divisors, whose sum is σ = 87456376257458. Its totient is φ = 87456376257456.

The previous prime is 87456376257433. The next prime is 87456376257461. The reversal of 87456376257457 is 75475267365478.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83938560916401 + 3517815341056 = 9161799^2 + 1875584^2 .

It is a cyclic number.

It is not a de Polignac number, because 87456376257457 - 2³⁹ = 86906620443569 is a prime.

It is not a weakly prime, because it can be changed into another prime (87456376657457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43728188128728 + 43728188128729.

It is an arithmetic number, because the mean of its divisors is an integer number (43728188128729).

Almost surely, 2^{87456376257457} is an apocalyptic number.

It is an amenable number.

87456376257457 is a deficient number, since it is larger than the sum of its proper divisors (1).

87456376257457 is an equidigital number, since it uses as much as digits as its factorization.

87456376257457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8297856000, while the sum is 76.

The spelling of 87456376257457 in words is "eighty-seven trillion, four hundred fifty-six billion, three hundred seventy-six million, two hundred fifty-seven thousand, four hundred fifty-seven".