26987447916 has 192 divisors, whose sum is σ = 84852633600. Its totient is φ = 7305292800.

The previous prime is 26987447899. The next prime is 26987447951. The reversal of 26987447916 is 61974478962.

26987447916 is a `hidden beast` number, since 2 + 6 + 98 + 74 + 479 + 1 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 450580 + ... + 506948.

It is an arithmetic number, because the mean of its divisors is an integer number (441940800).

Almost surely, 2^26987447916 is an apocalyptic number.

26987447916 is a gapful number since it is divisible by the number (26) 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 26987447916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42426316800).

26987447916 is an abundant number, since it is smaller than the sum of its proper divisors (57865185684).

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

26987447916 is a wasteful number, since it uses less digits than its factorization.

26987447916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56437 (or 56429 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The spelling of 26987447916 in words is "twenty-six billion, nine hundred eighty-seven million, four hundred forty-seven thousand, nine hundred sixteen".