10023421400257 has 2 divisors, whose sum is σ = 10023421400258. Its totient is φ = 10023421400256.

The previous prime is 10023421400203. The next prime is 10023421400263. The reversal of 10023421400257 is 75200412432001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8510499260176 + 1512922140081 = 2917276^2 + 1230009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10023421400257 is a prime.

It is not a weakly prime, because it can be changed into another prime (10023421400287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5011710700128 + 5011710700129.

It is an arithmetic number, because the mean of its divisors is an integer number (5011710700129).

Almost surely, 2^{10023421400257} is an apocalyptic number.

It is an amenable number.

10023421400257 is a deficient number, since it is larger than the sum of its proper divisors (1).

10023421400257 is an equidigital number, since it uses as much as digits as its factorization.

10023421400257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 31.

Adding to 10023421400257 its reverse (75200412432001), we get a palindrome (85223833832258).

The spelling of 10023421400257 in words is "ten trillion, twenty-three billion, four hundred twenty-one million, four hundred thousand, two hundred fifty-seven".