28430993299957 has 2 divisors, whose sum is σ = 28430993299958. Its totient is φ = 28430993299956.

The previous prime is 28430993299901. The next prime is 28430993300029. The reversal of 28430993299957 is 75999239903482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24654710553201 + 3776282746756 = 4965351^2 + 1943266^2 .

It is a cyclic number.

It is not a de Polignac number, because 28430993299957 - 2⁷ = 28430993299829 is a prime.

It is a super-3 number, since 3×28430993299957³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28430993290957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14215496649978 + 14215496649979.

It is an arithmetic number, because the mean of its divisors is an integer number (14215496649979).

Almost surely, 2^{28430993299957} is an apocalyptic number.

It is an amenable number.

28430993299957 is a deficient number, since it is larger than the sum of its proper divisors (1).

28430993299957 is an equidigital number, since it uses as much as digits as its factorization.

28430993299957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2380855680, while the sum is 79.

The spelling of 28430993299957 in words is "twenty-eight trillion, four hundred thirty billion, nine hundred ninety-three million, two hundred ninety-nine thousand, nine hundred fifty-seven".