28067138157 has 16 divisors (see below), whose sum is σ = 37888733952. Its totient is φ = 18479419200.

The previous prime is 28067138131. The next prime is 28067138243. The reversal of 28067138157 is 75183176082.

It is a happy number.

It is not a de Polignac number, because 28067138157 - 2⁶ = 28067138093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28067138117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3628 + ... + 236954.

It is an arithmetic number, because the mean of its divisors is an integer number (2368045872).

Almost surely, 2^28067138157 is an apocalyptic number.

It is an amenable number.

28067138157 is a deficient number, since it is larger than the sum of its proper divisors (9821595795).

28067138157 is a wasteful number, since it uses less digits than its factorization.

28067138157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233828.

The product of its (nonzero) digits is 564480, while the sum is 48.

The spelling of 28067138157 in words is "twenty-eight billion, sixty-seven million, one hundred thirty-eight thousand, one hundred fifty-seven".