28641211461 has 12 divisors (see below), whose sum is σ = 41375655360. Its totient is φ = 19091825640.

The previous prime is 28641211433. The next prime is 28641211463. The reversal of 28641211461 is 16411214682.

28641211461 is a `hidden beast` number, since 2 + 8 + 641 + 2 + 1 + 1 + 4 + 6 + 1 = 666.

It is not a de Polignac number, because 28641211461 - 2⁵ = 28641211429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28641211463) 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, 112851 + ... + 264608.

It is an arithmetic number, because the mean of its divisors is an integer number (3447971280).

Almost surely, 2^28641211461 is an apocalyptic number.

It is an amenable number.

28641211461 is a deficient number, since it is larger than the sum of its proper divisors (12734443899).

28641211461 is a wasteful number, since it uses less digits than its factorization.

28641211461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385896 (or 385893 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The spelling of 28641211461 in words is "twenty-eight billion, six hundred forty-one million, two hundred eleven thousand, four hundred sixty-one".