88171642921 has 8 divisors (see below), whose sum is σ = 88365749760. Its totient is φ = 87977680128.

The previous prime is 88171642907. The next prime is 88171642931. The reversal of 88171642921 is 12924617188.

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

It is a cyclic number.

It is not a de Polignac number, because 88171642921 - 2⁹ = 88171642409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (88171642931) 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, 1238820 + ... + 1308058.

It is an arithmetic number, because the mean of its divisors is an integer number (11045718720).

Almost surely, 2^88171642921 is an apocalyptic number.

It is an amenable number.

88171642921 is a deficient number, since it is larger than the sum of its proper divisors (194106839).

88171642921 is a wasteful number, since it uses less digits than its factorization.

88171642921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72023.

The product of its digits is 387072, while the sum is 49.

The spelling of 88171642921 in words is "eighty-eight billion, one hundred seventy-one million, six hundred forty-two thousand, nine hundred twenty-one".