1331752726157 has 4 divisors (see below), whose sum is σ = 1522003115616. Its totient is φ = 1141502336700.

The previous prime is 1331752726111. The next prime is 1331752726181. The reversal of 1331752726157 is 7516272571331.

It is a happy number.

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 1331752726157 - 2¹⁴ = 1331752709773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331752726357) 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, 95125194719 + ... + 95125194732.

It is an arithmetic number, because the mean of its divisors is an integer number (380500778904).

Almost surely, 2^{1331752726157} is an apocalyptic number.

It is an amenable number.

1331752726157 is a deficient number, since it is larger than the sum of its proper divisors (190250389459).

1331752726157 is an equidigital number, since it uses as much as digits as its factorization.

1331752726157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190250389458.

The product of its digits is 1852200, while the sum is 50.

The spelling of 1331752726157 in words is "one trillion, three hundred thirty-one billion, seven hundred fifty-two million, seven hundred twenty-six thousand, one hundred fifty-seven".