28586726511 has 32 divisors (see below), whose sum is σ = 43760640000. Its totient is φ = 16260453216.

The previous prime is 28586726491. The next prime is 28586726527. The reversal of 28586726511 is 11562768582.

It is not a de Polignac number, because 28586726511 - 2⁶ = 28586726447 is a prime.

It is a super-2 number, since 2×28586726511² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28586724511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5715990 + ... + 5720988.

It is an arithmetic number, because the mean of its divisors is an integer number (1367520000).

Almost surely, 2^28586726511 is an apocalyptic number.

28586726511 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28586726511 is a deficient number, since it is larger than the sum of its proper divisors (15173913489).

28586726511 is a wasteful number, since it uses less digits than its factorization.

28586726511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6203.

The product of its digits is 1612800, while the sum is 51.

The spelling of 28586726511 in words is "twenty-eight billion, five hundred eighty-six million, seven hundred twenty-six thousand, five hundred eleven".