26666990196480 has 216 divisors, whose sum is σ = 92530915534512. Its totient is φ = 7090702958592.

The previous prime is 26666990196463. The next prime is 26666990196547. The reversal of 26666990196480 is 8469109966662.

It is a super-2 number, since 2×26666990196480² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 26666990196399 and 26666990196408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 661932 + ... + 7332948.

Almost surely, 2^{26666990196480} is an apocalyptic number.

26666990196480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26666990196480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46265457767256).

26666990196480 is an abundant number, since it is smaller than the sum of its proper divisors (65863925338032).

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

26666990196480 is a wasteful number, since it uses less digits than its factorization.

26666990196480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6671391 (or 6671374 counting only the distinct ones).

The product of its (nonzero) digits is 362797056, while the sum is 72.

The spelling of 26666990196480 in words is "twenty-six trillion, six hundred sixty-six billion, nine hundred ninety million, one hundred ninety-six thousand, four hundred eighty".