88877542221 has 64 divisors (see below), whose sum is σ = 147021987840.
Its totient is φ = 52694919360.
The previous prime is 88877542219. The next prime is 88877542231. The reversal of 88877542221 is 12224577888.
88877542221 is a `hidden beast` number, since 8 + 8 + 8 + 77 + 542 + 2 + 21 = 666.
It is not a de Polignac number, because 88877542221 - 21 = 88877542219 is a prime.
It is a super-2 number, since 2×888775422212 (a number of 23 digits) contains 22 as substring.
It is a Curzon number.
It is a nialpdrome in base 10.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (88877542231) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2451996 + ... + 2487978.
It is an arithmetic number, because the mean of its divisors is an integer number (2297218560).
Almost surely, 288877542221 is an apocalyptic number.
88877542221 is the 159354-th nonagonal number.
It is an amenable number.
88877542221 is a deficient number, since it is larger than the sum of its proper divisors (58144445619).
88877542221 is a wasteful number, since it uses less digits than its factorization.
88877542221 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 36263 (or 36257 counting only the distinct ones).
The product of its digits is 4014080, while the sum is 54.
The spelling of 88877542221 in words is "eighty-eight billion, eight hundred seventy-seven million, five hundred forty-two thousand, two hundred twenty-one".