28112926493 has 2 divisors, whose sum is σ = 28112926494. Its totient is φ = 28112926492.

The previous prime is 28112926463. The next prime is 28112926561. The reversal of 28112926493 is 39462921182.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24352538809 + 3760387684 = 156053^2 + 61322^2 .

It is a cyclic number.

It is not a de Polignac number, because 28112926493 - 2²⁶ = 28045817629 is a prime.

It is a super-3 number, since 3×28112926493³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28112926423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14056463246 + 14056463247.

It is an arithmetic number, because the mean of its divisors is an integer number (14056463247).

Almost surely, 2^28112926493 is an apocalyptic number.

It is an amenable number.

28112926493 is a deficient number, since it is larger than the sum of its proper divisors (1).

28112926493 is an equidigital number, since it uses as much as digits as its factorization.

28112926493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 47.

The spelling of 28112926493 in words is "twenty-eight billion, one hundred twelve million, nine hundred twenty-six thousand, four hundred ninety-three".