28215916459739 has 2 divisors, whose sum is σ = 28215916459740. Its totient is φ = 28215916459738.

The previous prime is 28215916459691. The next prime is 28215916459823. The reversal of 28215916459739 is 93795461951282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28215916459739 - 2²⁸ = 28215648024283 is a prime.

It is a super-2 number, since 2×28215916459739² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (28215916459039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14107958229869 + 14107958229870.

It is an arithmetic number, because the mean of its divisors is an integer number (14107958229870).

Almost surely, 2^{28215916459739} is an apocalyptic number.

28215916459739 is a deficient number, since it is larger than the sum of its proper divisors (1).

28215916459739 is an equidigital number, since it uses as much as digits as its factorization.

28215916459739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 293932800, while the sum is 71.

The spelling of 28215916459739 in words is "twenty-eight trillion, two hundred fifteen billion, nine hundred sixteen million, four hundred fifty-nine thousand, seven hundred thirty-nine".