28116278157 has 16 divisors (see below), whose sum is σ = 42306626880. Its totient is φ = 16452576000.

The previous prime is 28116278131. The next prime is 28116278167. The reversal of 28116278157 is 75187261182.

It is not a de Polignac number, because 28116278157 - 2¹¹ = 28116276109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28116278167) 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, 14688844 + ... + 14690757.

It is an arithmetic number, because the mean of its divisors is an integer number (2644164180).

Almost surely, 2^28116278157 is an apocalyptic number.

It is an amenable number.

28116278157 is a deficient number, since it is larger than the sum of its proper divisors (14190348723).

28116278157 is a wasteful number, since it uses less digits than its factorization.

28116278157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29379644.

The product of its digits is 376320, while the sum is 48.

The spelling of 28116278157 in words is "twenty-eight billion, one hundred sixteen million, two hundred seventy-eight thousand, one hundred fifty-seven".