123620350571 has 2 divisors, whose sum is σ = 123620350572. Its totient is φ = 123620350570.

The previous prime is 123620350547. The next prime is 123620350583. The reversal of 123620350571 is 175053026321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123620350571 is a prime.

It is not a weakly prime, because it can be changed into another prime (123620352571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61810175285 + 61810175286.

It is an arithmetic number, because the mean of its divisors is an integer number (61810175286).

Almost surely, 2^123620350571 is an apocalyptic number.

123620350571 is a deficient number, since it is larger than the sum of its proper divisors (1).

123620350571 is an equidigital number, since it uses as much as digits as its factorization.

123620350571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 35.

Adding to 123620350571 its reverse (175053026321), we get a palindrome (298673376892).

The spelling of 123620350571 in words is "one hundred twenty-three billion, six hundred twenty million, three hundred fifty thousand, five hundred seventy-one".