26829144505157 has 4 divisors (see below), whose sum is σ = 26896724214636. Its totient is φ = 26761564795680.

The previous prime is 26829144505153. The next prime is 26829144505171. The reversal of 26829144505157 is 75150544192862.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21817998108676 + 5011146396481 = 4670974^2 + 2238559^2 .

It is a cyclic number.

It is not a de Polignac number, because 26829144505157 - 2² = 26829144505153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26829144505096 and 26829144505105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26829144505151) 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, 33789854144 + ... + 33789854937.

It is an arithmetic number, because the mean of its divisors is an integer number (6724181053659).

Almost surely, 2^{26829144505157} is an apocalyptic number.

It is an amenable number.

26829144505157 is a deficient number, since it is larger than the sum of its proper divisors (67579709479).

26829144505157 is an equidigital number, since it uses as much as digits as its factorization.

26829144505157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67579709478.

The product of its (nonzero) digits is 24192000, while the sum is 59.

The spelling of 26829144505157 in words is "twenty-six trillion, eight hundred twenty-nine billion, one hundred forty-four million, five hundred five thousand, one hundred fifty-seven".