26997002563 has 8 divisors (see below), whose sum is σ = 27263145728. Its totient is φ = 26730937224.

The previous prime is 26997002561. The next prime is 26997002573. The reversal of 26997002563 is 36520079962.

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 26997002563 - 2¹ = 26997002561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26997002561) 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, 881770 + ... + 911872.

It is an arithmetic number, because the mean of its divisors is an integer number (3407893216).

Almost surely, 2^26997002563 is an apocalyptic number.

26997002563 is a deficient number, since it is larger than the sum of its proper divisors (266143165).

26997002563 is a wasteful number, since it uses less digits than its factorization.

26997002563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38913.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The spelling of 26997002563 in words is "twenty-six billion, nine hundred ninety-seven million, two thousand, five hundred sixty-three".