28135562466 has 48 divisors (see below), whose sum is σ = 61861349664. Its totient is φ = 8460504000.

The previous prime is 28135562437. The next prime is 28135562473. The reversal of 28135562466 is 66426553182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1120206 + ... + 1145046.

It is an arithmetic number, because the mean of its divisors is an integer number (1288778118).

Almost surely, 2^28135562466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28135562466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30930674832).

28135562466 is an abundant number, since it is smaller than the sum of its proper divisors (33725787198).

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

28135562466 is a wasteful number, since it uses less digits than its factorization.

28135562466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25119 (or 24988 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 48.

The spelling of 28135562466 in words is "twenty-eight billion, one hundred thirty-five million, five hundred sixty-two thousand, four hundred sixty-six".