26215443326556 has 120 divisors (see below), whose sum is σ = 77340580233840. Its totient is φ = 7670140128000.

The previous prime is 26215443326543. The next prime is 26215443326603. The reversal of 26215443326556 is 65562334451262.

26215443326556 is a `hidden beast` number, since 2 + 6 + 2 + 1 + 54 + 4 + 3 + 32 + 6 + 556 = 666.

It is a super-2 number, since 2×26215443326556² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 126717745 + ... + 126924456.

It is an arithmetic number, because the mean of its divisors is an integer number (644504835282).

Almost surely, 2^{26215443326556} is an apocalyptic number.

It is an amenable number.

26215443326556 is an abundant number, since it is smaller than the sum of its proper divisors (51125136907284).

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

26215443326556 is a wasteful number, since it uses less digits than its factorization.

26215443326556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253642257 (or 253642246 counting only the distinct ones).

The product of its digits is 31104000, while the sum is 54.

The spelling of 26215443326556 in words is "twenty-six trillion, two hundred fifteen billion, four hundred forty-three million, three hundred twenty-six thousand, five hundred fifty-six".