26401520223 has 48 divisors (see below), whose sum is σ = 41887800864. Its totient is φ = 15923831040.

The previous prime is 26401520213. The next prime is 26401520267. The reversal of 26401520223 is 32202510462.

It is a happy number.

26401520223 is a `hidden beast` number, since 2 + 640 + 15 + 2 + 0 + 2 + 2 + 3 = 666.

It is not a de Polignac number, because 26401520223 - 2¹⁶ = 26401454687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26401520213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8562040 + ... + 8565122.

It is an arithmetic number, because the mean of its divisors is an integer number (872662518).

Almost surely, 2^26401520223 is an apocalyptic number.

26401520223 is a deficient number, since it is larger than the sum of its proper divisors (15486280641).

26401520223 is a wasteful number, since it uses less digits than its factorization.

26401520223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4536 (or 4533 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The spelling of 26401520223 in words is "twenty-six billion, four hundred one million, five hundred twenty thousand, two hundred twenty-three".