1399614561623 has 2 divisors, whose sum is σ = 1399614561624. Its totient is φ = 1399614561622.

The previous prime is 1399614561539. The next prime is 1399614561629. The reversal of 1399614561623 is 3261654169931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1399614561623 - 2¹⁰ = 1399614560599 is a prime.

It is a super-2 number, since 2×1399614561623² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1399614561629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699807280811 + 699807280812.

It is an arithmetic number, because the mean of its divisors is an integer number (699807280812).

Almost surely, 2^{1399614561623} is an apocalyptic number.

1399614561623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1399614561623 is an equidigital number, since it uses as much as digits as its factorization.

1399614561623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6298560, while the sum is 56.

The spelling of 1399614561623 in words is "one trillion, three hundred ninety-nine billion, six hundred fourteen million, five hundred sixty-one thousand, six hundred twenty-three".