3126797691645 has 8 divisors (see below), whose sum is σ = 5002876306656. Its totient is φ = 1667625435536.

The previous prime is 3126797691617. The next prime is 3126797691649. The reversal of 3126797691645 is 5461967976213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3126797691645 - 2⁵ = 3126797691613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3126797691649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104226589707 + ... + 104226589736.

It is an arithmetic number, because the mean of its divisors is an integer number (625359538332).

Almost surely, 2^{3126797691645} is an apocalyptic number.

It is an amenable number.

3126797691645 is a deficient number, since it is larger than the sum of its proper divisors (1876078615011).

3126797691645 is a wasteful number, since it uses less digits than its factorization.

3126797691645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208453179451.

The product of its digits is 102876480, while the sum is 66.

The spelling of 3126797691645 in words is "three trillion, one hundred twenty-six billion, seven hundred ninety-seven million, six hundred ninety-one thousand, six hundred forty-five".