123171963497 has 4 divisors (see below), whose sum is σ = 134369414736. Its totient is φ = 111974512260.

The previous prime is 123171963487. The next prime is 123171963517. The reversal of 123171963497 is 794369171321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123171963497 - 2¹² = 123171959401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123171963427) 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 in 3 ways as a sum of consecutive naturals, for example, 5598725603 + ... + 5598725624.

It is an arithmetic number, because the mean of its divisors is an integer number (33592353684).

Almost surely, 2^123171963497 is an apocalyptic number.

It is an amenable number.

123171963497 is a deficient number, since it is larger than the sum of its proper divisors (11197451239).

123171963497 is a wasteful number, since it uses less digits than its factorization.

123171963497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11197451238.

The product of its digits is 1714608, while the sum is 53.

The spelling of 123171963497 in words is "one hundred twenty-three billion, one hundred seventy-one million, nine hundred sixty-three thousand, four hundred ninety-seven".