28135040156 has 6 divisors (see below), whose sum is σ = 49236320280. Its totient is φ = 14067520076.

The previous prime is 28135040147. The next prime is 28135040159. The reversal of 28135040156 is 65104053182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28135040159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3516880016 + ... + 3516880023.

It is an arithmetic number, because the mean of its divisors is an integer number (8206053380).

Almost surely, 2^28135040156 is an apocalyptic number.

It is an amenable number.

28135040156 is a deficient number, since it is larger than the sum of its proper divisors (21101280124).

28135040156 is a wasteful number, since it uses less digits than its factorization.

28135040156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7033760043 (or 7033760041 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 28135040156 in words is "twenty-eight billion, one hundred thirty-five million, forty thousand, one hundred fifty-six".