26489233661 has 16 divisors (see below), whose sum is σ = 29382801408. Its totient is φ = 23679936000.

The previous prime is 26489233657. The next prime is 26489233663. The reversal of 26489233661 is 16633298462.

It is a cyclic number.

It is not a de Polignac number, because 26489233661 - 2² = 26489233657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26489233663) 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, 73961 + ... + 241761.

It is an arithmetic number, because the mean of its divisors is an integer number (1836425088).

Almost surely, 2^26489233661 is an apocalyptic number.

It is an amenable number.

26489233661 is a deficient number, since it is larger than the sum of its proper divisors (2893567747).

26489233661 is a wasteful number, since it uses less digits than its factorization.

26489233661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168052.

The product of its digits is 2239488, while the sum is 50.

The spelling of 26489233661 in words is "twenty-six billion, four hundred eighty-nine million, two hundred thirty-three thousand, six hundred sixty-one".