26401122137 has 8 divisors (see below), whose sum is σ = 28683589704. Its totient is φ = 24154599168.

The previous prime is 26401122127. The next prime is 26401122197. The reversal of 26401122137 is 73122110462.

It can be written as a sum of positive squares in 4 ways, for example, as 4946176 + 26396175961 = 2224^2 + 162469^2 .

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 26401122137 - 2¹² = 26401118041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26401122127) 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, 8984618 + ... + 8987555.

It is an arithmetic number, because the mean of its divisors is an integer number (3585448713).

Almost surely, 2^26401122137 is an apocalyptic number.

It is an amenable number.

26401122137 is a deficient number, since it is larger than the sum of its proper divisors (2282467567).

26401122137 is a wasteful number, since it uses less digits than its factorization.

26401122137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17972299.

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 26401122137 its reverse (73122110462), we get a palindrome (99523232599).

The spelling of 26401122137 in words is "twenty-six billion, four hundred one million, one hundred twenty-two thousand, one hundred thirty-seven".