26124905647 has 4 divisors (see below), whose sum is σ = 26830984216. Its totient is φ = 25418827080.

The previous prime is 26124905641. The next prime is 26124905659. The reversal of 26124905647 is 74650942162.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26124905647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26124905597 and 26124905606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26124905641) 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, 353039229 + ... + 353039302.

It is an arithmetic number, because the mean of its divisors is an integer number (6707746054).

Almost surely, 2^26124905647 is an apocalyptic number.

26124905647 is a deficient number, since it is larger than the sum of its proper divisors (706078569).

26124905647 is an equidigital number, since it uses as much as digits as its factorization.

26124905647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706078568.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 26124905647 in words is "twenty-six billion, one hundred twenty-four million, nine hundred five thousand, six hundred forty-seven".