26461644663 has 8 divisors (see below), whose sum is σ = 35286789888. Its totient is φ = 17638797944.

The previous prime is 26461644623. The next prime is 26461644673. The reversal of 26461644663 is 36644616462.

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 26461644663 - 2¹⁰ = 26461643639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26461644623) 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, 547581 + ... + 593942.

It is an arithmetic number, because the mean of its divisors is an integer number (4410848736).

Almost surely, 2^26461644663 is an apocalyptic number.

26461644663 is a deficient number, since it is larger than the sum of its proper divisors (8825145225).

26461644663 is a wasteful number, since it uses less digits than its factorization.

26461644663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149253.

The product of its digits is 2985984, while the sum is 48.

The spelling of 26461644663 in words is "twenty-six billion, four hundred sixty-one million, six hundred forty-four thousand, six hundred sixty-three".