26987731332 has 24 divisors (see below), whose sum is σ = 63858295872. Its totient is φ = 8869207200.

The previous prime is 26987731313. The next prime is 26987731343. The reversal of 26987731332 is 23313778962.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15837019 + ... + 15838722.

It is an arithmetic number, because the mean of its divisors is an integer number (2660762328).

Almost surely, 2^26987731332 is an apocalyptic number.

It is an amenable number.

26987731332 is an abundant number, since it is smaller than the sum of its proper divisors (36870564540).

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

26987731332 is a wasteful number, since it uses less digits than its factorization.

26987731332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31675819 (or 31675817 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 51.

The spelling of 26987731332 in words is "twenty-six billion, nine hundred eighty-seven million, seven hundred thirty-one thousand, three hundred thirty-two".