12135338251957 has 4 divisors (see below), whose sum is σ = 12662961654240. Its totient is φ = 11607714849676.

The previous prime is 12135338251951. The next prime is 12135338251991. The reversal of 12135338251957 is 75915283353121.

12135338251957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12135338251957 - 2¹⁵ = 12135338219189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12135338251898 and 12135338251907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12135338251951) 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, 263811701107 + ... + 263811701152.

It is an arithmetic number, because the mean of its divisors is an integer number (3165740413560).

Almost surely, 2^{12135338251957} is an apocalyptic number.

It is an amenable number.

12135338251957 is a deficient number, since it is larger than the sum of its proper divisors (527623402283).

12135338251957 is an equidigital number, since it uses as much as digits as its factorization.

12135338251957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527623402282.

The product of its digits is 6804000, while the sum is 55.

The spelling of 12135338251957 in words is "twelve trillion, one hundred thirty-five billion, three hundred thirty-eight million, two hundred fifty-one thousand, nine hundred fifty-seven".