26403631394 has 16 divisors (see below), whose sum is σ = 45269057088. Its totient is φ = 11314419792.

The previous prime is 26403631339. The next prime is 26403631453. The reversal of 26403631394 is 49313630462.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1004 + ... + 229800.

It is an arithmetic number, because the mean of its divisors is an integer number (2829316068).

Almost surely, 2^26403631394 is an apocalyptic number.

26403631394 is a deficient number, since it is larger than the sum of its proper divisors (18865425694).

26403631394 is a wasteful number, since it uses less digits than its factorization.

26403631394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237049.

The product of its (nonzero) digits is 279936, while the sum is 41.

The spelling of 26403631394 in words is "twenty-six billion, four hundred three million, six hundred thirty-one thousand, three hundred ninety-four".