26013644651 has 16 divisors (see below), whose sum is σ = 26856510240. Its totient is φ = 25184839680.

The previous prime is 26013644633. The next prime is 26013644659. The reversal of 26013644651 is 15644631062.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26013644651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26013644659) 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, 8290955 + ... + 8294091.

It is an arithmetic number, because the mean of its divisors is an integer number (1678531890).

Almost surely, 2^26013644651 is an apocalyptic number.

26013644651 is a deficient number, since it is larger than the sum of its proper divisors (842865589).

26013644651 is a wasteful number, since it uses less digits than its factorization.

26013644651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5294.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 26013644651 in words is "twenty-six billion, thirteen million, six hundred forty-four thousand, six hundred fifty-one".