1620140246523 has 6 divisors (see below), whose sum is σ = 2340202578324. Its totient is φ = 1080093497676.

The previous prime is 1620140246513. The next prime is 1620140246533. The reversal of 1620140246523 is 3256420410261.

1620140246523 is a `hidden beast` number, since 1 + 6 + 201 + 402 + 46 + 5 + 2 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (1620140246513) and next prime (1620140246533).

It is not a de Polignac number, because 1620140246523 - 2²⁸ = 1619871811067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1620140246513) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90007791465 + ... + 90007791482.

It is an arithmetic number, because the mean of its divisors is an integer number (390033763054).

Almost surely, 2^{1620140246523} is an apocalyptic number.

1620140246523 is a deficient number, since it is larger than the sum of its proper divisors (720062331801).

1620140246523 is a wasteful number, since it uses less digits than its factorization.

1620140246523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180015582953 (or 180015582950 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 1620140246523 its reverse (3256420410261), we get a palindrome (4876560656784).

The spelling of 1620140246523 in words is "one trillion, six hundred twenty billion, one hundred forty million, two hundred forty-six thousand, five hundred twenty-three".