28652557311 has 12 divisors (see below), whose sum is σ = 47299459792. Its totient is φ = 16372889856.

The previous prime is 28652557273. The next prime is 28652557319. The reversal of 28652557311 is 11375525682.

28652557311 is a `hidden beast` number, since 2 + 8 + 65 + 2 + 5 + 573 + 11 = 666.

It is not a de Polignac number, because 28652557311 - 2¹⁵ = 28652524543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28652557319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 227401186 + ... + 227401311.

Almost surely, 2^28652557311 is an apocalyptic number.

28652557311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28652557311 is a deficient number, since it is larger than the sum of its proper divisors (18646902481).

28652557311 is a wasteful number, since it uses less digits than its factorization.

28652557311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454802510 (or 454802507 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The spelling of 28652557311 in words is "twenty-eight billion, six hundred fifty-two million, five hundred fifty-seven thousand, three hundred eleven".