28307661007 has 2 divisors, whose sum is σ = 28307661008. Its totient is φ = 28307661006.

The previous prime is 28307660999. The next prime is 28307661013. The reversal of 28307661007 is 70016670382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28307661007 - 2³ = 28307660999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28307661097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14153830503 + 14153830504.

It is an arithmetic number, because the mean of its divisors is an integer number (14153830504).

Almost surely, 2^28307661007 is an apocalyptic number.

28307661007 is a deficient number, since it is larger than the sum of its proper divisors (1).

28307661007 is an equidigital number, since it uses as much as digits as its factorization.

28307661007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 28307661007 in words is "twenty-eight billion, three hundred seven million, six hundred sixty-one thousand, seven".