26988268490 has 8 divisors (see below), whose sum is σ = 48578883300. Its totient is φ = 10795307392.

The previous prime is 26988268487. The next prime is 26988268511. The reversal of 26988268490 is 9486288962.

It can be written as a sum of positive squares in 2 ways, for example, as 24050736889 + 2937531601 = 155083^2 + 54199^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1349413415 + ... + 1349413434.

Almost surely, 2^26988268490 is an apocalyptic number.

26988268490 is a deficient number, since it is larger than the sum of its proper divisors (21590614810).

26988268490 is a wasteful number, since it uses less digits than its factorization.

26988268490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2698826856.

The product of its (nonzero) digits is 23887872, while the sum is 62.

The spelling of 26988268490 in words is "twenty-six billion, nine hundred eighty-eight million, two hundred sixty-eight thousand, four hundred ninety".