28977467155 has 64 divisors (see below), whose sum is σ = 45206396928. Its totient is φ = 17336954880.

The previous prime is 28977467153. The next prime is 28977467161. The reversal of 28977467155 is 55176477982.

It is not a de Polignac number, because 28977467155 - 2¹ = 28977467153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28977467093 and 28977467102.

It is not an unprimeable number, because it can be changed into a prime (28977467153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 582627 + ... + 630403.

It is an arithmetic number, because the mean of its divisors is an integer number (706349952).

Almost surely, 2^28977467155 is an apocalyptic number.

28977467155 is a deficient number, since it is larger than the sum of its proper divisors (16228929773).

28977467155 is a wasteful number, since it uses less digits than its factorization.

28977467155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47876.

The product of its digits is 29635200, while the sum is 61.

The spelling of 28977467155 in words is "twenty-eight billion, nine hundred seventy-seven million, four hundred sixty-seven thousand, one hundred fifty-five".