26987151900 has 36 divisors (see below), whose sum is σ = 78082827032. Its totient is φ = 7196573760.

The previous prime is 26987151853. The next prime is 26987151937. The reversal of 26987151900 is 915178962.

It is a super-2 number, since 2×26987151900² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26987151900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44978287 + ... + 44978886.

Almost surely, 2^26987151900 is an apocalyptic number.

26987151900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26987151900 is an abundant number, since it is smaller than the sum of its proper divisors (51095675132).

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

26987151900 is a wasteful number, since it uses less digits than its factorization.

26987151900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89957190 (or 89957183 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 48.

The spelling of 26987151900 in words is "twenty-six billion, nine hundred eighty-seven million, one hundred fifty-one thousand, nine hundred".