13097781951 has 8 divisors (see below), whose sum is σ = 17469846144. Its totient is φ = 8728786200.

The previous prime is 13097781947. The next prime is 13097781997. The reversal of 13097781951 is 15918779031.

13097781951 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13097781951 - 2² = 13097781947 is a prime.

It is a super-4 number, since 4×13097781951⁴ (a number of 42 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13097781894 and 13097781903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13097781901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757131 + ... + 774236.

It is an arithmetic number, because the mean of its divisors is an integer number (2183730768).

Almost surely, 2^13097781951 is an apocalyptic number.

13097781951 is a deficient number, since it is larger than the sum of its proper divisors (4372064193).

13097781951 is a wasteful number, since it uses less digits than its factorization.

13097781951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534221.

The product of its (nonzero) digits is 476280, while the sum is 51.

The spelling of 13097781951 in words is "thirteen billion, ninety-seven million, seven hundred eighty-one thousand, nine hundred fifty-one".