28621946177 has 8 divisors (see below), whose sum is σ = 31334276640. Its totient is φ = 25928004960.

The previous prime is 28621946159. The next prime is 28621946207. The reversal of 28621946177 is 77164912682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28621946177 - 2³² = 24326978881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28621946117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4594052 + ... + 4600277.

It is an arithmetic number, because the mean of its divisors is an integer number (3916784580).

Almost surely, 2^28621946177 is an apocalyptic number.

It is an amenable number.

28621946177 is a deficient number, since it is larger than the sum of its proper divisors (2712330463).

28621946177 is a wasteful number, since it uses less digits than its factorization.

28621946177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9194623.

The product of its digits is 2032128, while the sum is 53.

The spelling of 28621946177 in words is "twenty-eight billion, six hundred twenty-one million, nine hundred forty-six thousand, one hundred seventy-seven".