1427317517623 has 2 divisors, whose sum is σ = 1427317517624. Its totient is φ = 1427317517622.

The previous prime is 1427317517599. The next prime is 1427317517627. The reversal of 1427317517623 is 3267157137241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1427317517623 - 2³⁷ = 1289878564151 is a prime.

It is a super-2 number, since 2×1427317517623² (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 (1427317517627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713658758811 + 713658758812.

It is an arithmetic number, because the mean of its divisors is an integer number (713658758812).

Almost surely, 2^{1427317517623} is an apocalyptic number.

1427317517623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427317517623 is an equidigital number, since it uses as much as digits as its factorization.

1427317517623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1481760, while the sum is 49.

The spelling of 1427317517623 in words is "one trillion, four hundred twenty-seven billion, three hundred seventeen million, five hundred seventeen thousand, six hundred twenty-three".