28058185155 has 64 divisors (see below), whose sum is σ = 60276077568. Its totient is φ = 10763573760.

The previous prime is 28058185147. The next prime is 28058185193. The reversal of 28058185155 is 55158185082.

It is not a de Polignac number, because 28058185155 - 2³ = 28058185147 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 919324 + ... + 949353.

It is an arithmetic number, because the mean of its divisors is an integer number (941813712).

Almost surely, 2^28058185155 is an apocalyptic number.

28058185155 is an abundant number, since it is smaller than the sum of its proper divisors (32217892413).

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

28058185155 is a wasteful number, since it uses less digits than its factorization.

28058185155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868716.

The product of its (nonzero) digits is 640000, while the sum is 48.

The spelling of 28058185155 in words is "twenty-eight billion, fifty-eight million, one hundred eighty-five thousand, one hundred fifty-five".