26090721216 has 224 divisors, whose sum is σ = 89526343680. Its totient is φ = 7295726592.

The previous prime is 26090721143. The next prime is 26090721221. The reversal of 26090721216 is 61212709062.

26090721216 is a `hidden beast` number, since 2 + 609 + 0 + 7 + 21 + 21 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 545566 + ... + 591458.

Almost surely, 2^26090721216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26090721216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44763171840).

26090721216 is an abundant number, since it is smaller than the sum of its proper divisors (63435622464).

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

26090721216 is a wasteful number, since it uses less digits than its factorization.

26090721216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45968 (or 45952 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The spelling of 26090721216 in words is "twenty-six billion, ninety million, seven hundred twenty-one thousand, two hundred sixteen".