26721198238 has 16 divisors (see below), whose sum is σ = 45986014944. Its totient is φ = 11407380480.

The previous prime is 26721198211. The next prime is 26721198307. The reversal of 26721198238 is 83289112762.

It is a junction number, because it is equal to n+sod(n) for n = 26721198191 and 26721198200.

It is a congruent 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, 3709743 + ... + 3716938.

It is an arithmetic number, because the mean of its divisors is an integer number (2874125934).

Almost surely, 2^26721198238 is an apocalyptic number.

26721198238 is a deficient number, since it is larger than the sum of its proper divisors (19264816706).

26721198238 is a wasteful number, since it uses less digits than its factorization.

26721198238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7426947.

The product of its digits is 580608, while the sum is 49.

The spelling of 26721198238 in words is "twenty-six billion, seven hundred twenty-one million, one hundred ninety-eight thousand, two hundred thirty-eight".