28952985851 has 2 divisors, whose sum is σ = 28952985852. Its totient is φ = 28952985850.

The previous prime is 28952985797. The next prime is 28952985857. The reversal of 28952985851 is 15858925982.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28952985851 is a prime.

It is a super-3 number, since 3×28952985851³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (28952985857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14476492925 + 14476492926.

It is an arithmetic number, because the mean of its divisors is an integer number (14476492926).

Almost surely, 2^28952985851 is an apocalyptic number.

28952985851 is a deficient number, since it is larger than the sum of its proper divisors (1).

28952985851 is an equidigital number, since it uses as much as digits as its factorization.

28952985851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736000, while the sum is 62.

The spelling of 28952985851 in words is "twenty-eight billion, nine hundred fifty-two million, nine hundred eighty-five thousand, eight hundred fifty-one".