28361554131 has 8 divisors (see below), whose sum is σ = 37816194304. Its totient is φ = 18907308360.

The previous prime is 28361554073. The next prime is 28361554147. The reversal of 28361554131 is 13145516382.

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

It is not a de Polignac number, because 28361554131 - 2⁷ = 28361554003 is a prime.

It is a super-2 number, since 2×28361554131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28361554131.

It is not an unprimeable number, because it can be changed into a prime (28361556131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189210 + ... + 304176.

It is an arithmetic number, because the mean of its divisors is an integer number (4727024288).

Almost surely, 2^28361554131 is an apocalyptic number.

28361554131 is a deficient number, since it is larger than the sum of its proper divisors (9454640173).

28361554131 is a wasteful number, since it uses less digits than its factorization.

28361554131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197201.

The product of its digits is 86400, while the sum is 39.

The spelling of 28361554131 in words is "twenty-eight billion, three hundred sixty-one million, five hundred fifty-four thousand, one hundred thirty-one".