26799352987 has 4 divisors (see below), whose sum is σ = 29235657816. Its totient is φ = 24363048160.

The previous prime is 26799352961. The next prime is 26799353017. The reversal of 26799352987 is 78925399762.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 26799352987 - 2¹⁹ = 26798828699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26799352927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1218152398 + ... + 1218152419.

It is an arithmetic number, because the mean of its divisors is an integer number (7308914454).

Almost surely, 2^26799352987 is an apocalyptic number.

26799352987 is a deficient number, since it is larger than the sum of its proper divisors (2436304829).

26799352987 is a wasteful number, since it uses less digits than its factorization.

26799352987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2436304828.

The product of its digits is 102876480, while the sum is 67.

The spelling of 26799352987 in words is "twenty-six billion, seven hundred ninety-nine million, three hundred fifty-two thousand, nine hundred eighty-seven".