28506834753431 has 2 divisors, whose sum is σ = 28506834753432. Its totient is φ = 28506834753430.

The previous prime is 28506834753407. The next prime is 28506834753487. The reversal of 28506834753431 is 13435743860582.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28506834753431 is a prime.

It is a super-2 number, since 2×28506834753431² (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 (28506834453431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14253417376715 + 14253417376716.

It is an arithmetic number, because the mean of its divisors is an integer number (14253417376716).

Almost surely, 2^{28506834753431} is an apocalyptic number.

28506834753431 is a deficient number, since it is larger than the sum of its proper divisors (1).

28506834753431 is an equidigital number, since it uses as much as digits as its factorization.

28506834753431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58060800, while the sum is 59.

The spelling of 28506834753431 in words is "twenty-eight trillion, five hundred six billion, eight hundred thirty-four million, seven hundred fifty-three thousand, four hundred thirty-one".