10321087657 has 2 divisors, whose sum is σ = 10321087658. Its totient is φ = 10321087656.

The previous prime is 10321087649. The next prime is 10321087661. The reversal of 10321087657 is 75678012301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9595377936 + 725709721 = 97956^2 + 26939^2 .

It is a cyclic number.

It is not a de Polignac number, because 10321087657 - 2³ = 10321087649 is a prime.

It is not a weakly prime, because it can be changed into another prime (10321087607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5160543828 + 5160543829.

It is an arithmetic number, because the mean of its divisors is an integer number (5160543829).

Almost surely, 2^10321087657 is an apocalyptic number.

It is an amenable number.

10321087657 is a deficient number, since it is larger than the sum of its proper divisors (1).

10321087657 is an equidigital number, since it uses as much as digits as its factorization.

10321087657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 40.

Adding to 10321087657 its reverse (75678012301), we get a palindrome (85999099958).

The spelling of 10321087657 in words is "ten billion, three hundred twenty-one million, eighty-seven thousand, six hundred fifty-seven".