12157773470723 has 4 divisors (see below), whose sum is σ = 12158174575608. Its totient is φ = 12157372365840.

The previous prime is 12157773470699. The next prime is 12157773470741. The reversal of 12157773470723 is 32707437775121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12157773470723 - 2³⁸ = 11882895563779 is a prime.

It is a super-2 number, since 2×12157773470723² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12157773470743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200506973 + ... + 200567598.

It is an arithmetic number, because the mean of its divisors is an integer number (3039543643902).

Almost surely, 2^{12157773470723} is an apocalyptic number.

12157773470723 is a deficient number, since it is larger than the sum of its proper divisors (401104885).

12157773470723 is an equidigital number, since it uses as much as digits as its factorization.

12157773470723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401104884.

The product of its (nonzero) digits is 12101040, while the sum is 56.

The spelling of 12157773470723 in words is "twelve trillion, one hundred fifty-seven billion, seven hundred seventy-three million, four hundred seventy thousand, seven hundred twenty-three".