26493493661020 has 72 divisors (see below), whose sum is σ = 59505828877152. Its totient is φ = 9889405616640.

The previous prime is 26493493661017. The next prime is 26493493661021. The reversal of 26493493661020 is 2016639439462.

It is a happy number.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26493493661021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16357779 + ... + 17904298.

It is an arithmetic number, because the mean of its divisors is an integer number (826469845516).

Almost surely, 2^{26493493661020} is an apocalyptic number.

26493493661020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26493493661020 is an abundant number, since it is smaller than the sum of its proper divisors (33012335216132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26493493661020 is a wasteful number, since it uses less digits than its factorization.

26493493661020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34262191 (or 34262148 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 55.

The spelling of 26493493661020 in words is "twenty-six trillion, four hundred ninety-three billion, four hundred ninety-three million, six hundred sixty-one thousand, twenty".