18707796213001 has 27 divisors (see below), whose sum is σ = 21852844789269. Its totient is φ = 15968688283968.

The previous prime is 18707796212977. The next prime is 18707796213011. The reversal of 18707796213001 is 10031269770781.

The square root of 18707796213001 is 4325251.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 5208961759225 + 13498834453776 = 2282315^2 + 3674076^2 .

It is not a de Polignac number, because 18707796213001 - 2⁷ = 18707796212873 is a prime.

It is a super-2 number, since 2×18707796213001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18707796213001.

It is not an unprimeable number, because it can be changed into a prime (18707796213011) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8144446485 + ... + 8144448781.

Almost surely, 2^{18707796213001} is an apocalyptic number.

18707796213001 is the 4325251-st square number.

18707796213001 is the 2162626-th centered octagonal number.

It is an amenable number.

18707796213001 is a deficient number, since it is larger than the sum of its proper divisors (3145048576268).

18707796213001 is an frugal number, since it uses more digits than its factorization.

18707796213001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5146 (or 2573 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 52.

The spelling of 18707796213001 in words is "eighteen trillion, seven hundred seven billion, seven hundred ninety-six million, two hundred thirteen thousand, one".