26602221642861 has 16 divisors (see below), whose sum is σ = 35484970143744. Its totient is φ = 17727144872304.

The previous prime is 26602221642853. The next prime is 26602221642907. The reversal of 26602221642861 is 16824612220662.

It is not a de Polignac number, because 26602221642861 - 2³ = 26602221642853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26602221642861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26602221642461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103395400 + ... + 103652366.

It is an arithmetic number, because the mean of its divisors is an integer number (2217810633984).

Almost surely, 2^{26602221642861} is an apocalyptic number.

It is an amenable number.

26602221642861 is a deficient number, since it is larger than the sum of its proper divisors (8882748500883).

26602221642861 is a wasteful number, since it uses less digits than its factorization.

26602221642861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271760.

The product of its (nonzero) digits is 1327104, while the sum is 48.

The spelling of 26602221642861 in words is "twenty-six trillion, six hundred two billion, two hundred twenty-one million, six hundred forty-two thousand, eight hundred sixty-one".