26198718658 has 16 divisors (see below), whose sum is σ = 46007506944. Its totient is φ = 10954167840.

The previous prime is 26198718641. The next prime is 26198718659. The reversal of 26198718658 is 85681789162.

It is a junction number, because it is equal to n+sod(n) for n = 26198718596 and 26198718605.

It is not an unprimeable number, because it can be changed into a prime (26198718659) 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, 22820610 + ... + 22821757.

It is an arithmetic number, because the mean of its divisors is an integer number (2875469184).

Almost surely, 2^26198718658 is an apocalyptic number.

26198718658 is a deficient number, since it is larger than the sum of its proper divisors (19808788286).

26198718658 is a wasteful number, since it uses less digits than its factorization.

26198718658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45642417.

The product of its digits is 11612160, while the sum is 61.

The spelling of 26198718658 in words is "twenty-six billion, one hundred ninety-eight million, seven hundred eighteen thousand, six hundred fifty-eight".