10402400340523 has 2 divisors, whose sum is σ = 10402400340524. Its totient is φ = 10402400340522.

The previous prime is 10402400340407. The next prime is 10402400340529. The reversal of 10402400340523 is 32504300420401.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10402400340523 - 2¹⁷ = 10402400209451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10402400340491 and 10402400340500.

It is not a weakly prime, because it can be changed into another prime (10402400340529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5201200170261 + 5201200170262.

It is an arithmetic number, because the mean of its divisors is an integer number (5201200170262).

Almost surely, 2^{10402400340523} is an apocalyptic number.

10402400340523 is a deficient number, since it is larger than the sum of its proper divisors (1).

10402400340523 is an equidigital number, since it uses as much as digits as its factorization.

10402400340523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 10402400340523 its reverse (32504300420401), we get a palindrome (42906700760924).

The spelling of 10402400340523 in words is "ten trillion, four hundred two billion, four hundred million, three hundred forty thousand, five hundred twenty-three".