10402456789 has 2 divisors, whose sum is σ = 10402456790. Its totient is φ = 10402456788.

The previous prime is 10402456763. The next prime is 10402456807. The reversal of 10402456789 is 98765420401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10350010225 + 52446564 = 101735^2 + 7242^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10402456789 is a prime.

It is a super-2 number, since 2×10402456789² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10402456709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5201228394 + 5201228395.

It is an arithmetic number, because the mean of its divisors is an integer number (5201228395).

Almost surely, 2^10402456789 is an apocalyptic number.

It is an amenable number.

10402456789 is a deficient number, since it is larger than the sum of its proper divisors (1).

10402456789 is an equidigital number, since it uses as much as digits as its factorization.

10402456789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 10402456789 in words is "ten billion, four hundred two million, four hundred fifty-six thousand, seven hundred eighty-nine".