28431698364799 has 2 divisors, whose sum is σ = 28431698364800. Its totient is φ = 28431698364798.

The previous prime is 28431698364749. The next prime is 28431698364841. The reversal of 28431698364799 is 99746389613482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28431698364799 - 2¹⁵ = 28431698332031 is a prime.

It is a super-2 number, since 2×28431698364799² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28431698364749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14215849182399 + 14215849182400.

It is an arithmetic number, because the mean of its divisors is an integer number (14215849182400).

Almost surely, 2^{28431698364799} is an apocalyptic number.

28431698364799 is a deficient number, since it is larger than the sum of its proper divisors (1).

28431698364799 is an equidigital number, since it uses as much as digits as its factorization.

28431698364799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386105856, while the sum is 79.

The spelling of 28431698364799 in words is "twenty-eight trillion, four hundred thirty-one billion, six hundred ninety-eight million, three hundred sixty-four thousand, seven hundred ninety-nine".