1399654203967 has 2 divisors, whose sum is σ = 1399654203968. Its totient is φ = 1399654203966.

The previous prime is 1399654203887. The next prime is 1399654203979. The reversal of 1399654203967 is 7693024569931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1399654203967 - 2¹¹ = 1399654201919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1399654203899 and 1399654203908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1399654204967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699827101983 + 699827101984.

It is an arithmetic number, because the mean of its divisors is an integer number (699827101984).

Almost surely, 2^{1399654203967} is an apocalyptic number.

1399654203967 is a deficient number, since it is larger than the sum of its proper divisors (1).

1399654203967 is an equidigital number, since it uses as much as digits as its factorization.

1399654203967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 66134880, while the sum is 64.

The spelling of 1399654203967 in words is "one trillion, three hundred ninety-nine billion, six hundred fifty-four million, two hundred three thousand, nine hundred sixty-seven".