26012637641 has 16 divisors (see below), whose sum is σ = 26677667520. Its totient is φ = 25356302400.

The previous prime is 26012637619. The next prime is 26012637661. The reversal of 26012637641 is 14673621062.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26012637641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 26012637595 and 26012637604.

It is not an unprimeable number, because it can be changed into a prime (26012637611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9325475 + ... + 9328263.

It is an arithmetic number, because the mean of its divisors is an integer number (1667354220).

Almost surely, 2^26012637641 is an apocalyptic number.

It is an amenable number.

26012637641 is a deficient number, since it is larger than the sum of its proper divisors (665029879).

26012637641 is a wasteful number, since it uses less digits than its factorization.

26012637641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4264.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 26012637641 in words is "twenty-six billion, twelve million, six hundred thirty-seven thousand, six hundred forty-one".