10399999999973 has 2 divisors, whose sum is σ = 10399999999974. Its totient is φ = 10399999999972.

The previous prime is 10399999999927. The next prime is 10399999999979. The reversal of 10399999999973 is 37999999999301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8458051842529 + 1941948157444 = 2908273^2 + 1393538^2 .

It is a cyclic number.

It is not a de Polignac number, because 10399999999973 - 2³⁴ = 10382820130789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10399999999979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5199999999986 + 5199999999987.

It is an arithmetic number, because the mean of its divisors is an integer number (5199999999987).

Almost surely, 2^{10399999999973} is an apocalyptic number.

It is an amenable number.

10399999999973 is a deficient number, since it is larger than the sum of its proper divisors (1).

10399999999973 is an equidigital number, since it uses as much as digits as its factorization.

10399999999973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24407490807, while the sum is 95.

The spelling of 10399999999973 in words is "ten trillion, three hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred seventy-three".