13956832997 has 4 divisors (see below), whose sum is σ = 13957458060. Its totient is φ = 13956207936.

The previous prime is 13956832991. The next prime is 13956833003. The reversal of 13956832997 is 79923865931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13956832991) and next prime (13956833003).

It can be written as a sum of positive squares in 2 ways, for example, as 8065656481 + 5891176516 = 89809^2 + 76754^2 .

It is a cyclic number.

It is not a de Polignac number, because 13956832997 - 2¹⁴ = 13956816613 is a prime.

It is a super-2 number, since 2×13956832997² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13956832991) 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, 277748 + ... + 324125.

It is an arithmetic number, because the mean of its divisors is an integer number (3489364515).

Almost surely, 2^13956832997 is an apocalyptic number.

It is an amenable number.

13956832997 is a deficient number, since it is larger than the sum of its proper divisors (625063).

13956832997 is an equidigital number, since it uses as much as digits as its factorization.

13956832997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625062.

The product of its digits is 22044960, while the sum is 62.

The spelling of 13956832997 in words is "thirteen billion, nine hundred fifty-six million, eight hundred thirty-two thousand, nine hundred ninety-seven".