10399999999979 has 2 divisors, whose sum is σ = 10399999999980. Its totient is φ = 10399999999978.

The previous prime is 10399999999973. The next prime is 10400000000009. The reversal of 10399999999979 is 97999999999301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10399999999979 - 2¹² = 10399999995883 is a prime.

It is not a weakly prime, because it can be changed into another prime (10399999999973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5199999999989 + 5199999999990.

It is an arithmetic number, because the mean of its divisors is an integer number (5199999999990).

Almost surely, 2^{10399999999979} is an apocalyptic number.

10399999999979 is a deficient number, since it is larger than the sum of its proper divisors (1).

10399999999979 is an equidigital number, since it uses as much as digits as its factorization.

10399999999979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73222472421, while the sum is 101.

The spelling of 10399999999979 in words is "ten trillion, three hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred seventy-nine".