1520463663623 has 2 divisors, whose sum is σ = 1520463663624. Its totient is φ = 1520463663622.

The previous prime is 1520463663619. The next prime is 1520463663671. The reversal of 1520463663623 is 3263663640251.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1520463663623 - 2² = 1520463663619 is a prime.

It is a super-2 number, since 2×1520463663623² (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 (1520463563623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760231831811 + 760231831812.

It is an arithmetic number, because the mean of its divisors is an integer number (760231831812).

Almost surely, 2^{1520463663623} is an apocalyptic number.

1520463663623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520463663623 is an equidigital number, since it uses as much as digits as its factorization.

1520463663623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2799360, while the sum is 47.

The spelling of 1520463663623 in words is "one trillion, five hundred twenty billion, four hundred sixty-three million, six hundred sixty-three thousand, six hundred twenty-three".