88239798721 has 4 divisors (see below), whose sum is σ = 88242663600. Its totient is φ = 88236933844.

The previous prime is 88239798641. The next prime is 88239798761. The reversal of 88239798721 is 12789793288.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 88239798721 - 2¹⁹ = 88239274433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88239798761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1385731 + ... + 1448008.

It is an arithmetic number, because the mean of its divisors is an integer number (22060665900).

Almost surely, 2^88239798721 is an apocalyptic number.

It is an amenable number.

88239798721 is a deficient number, since it is larger than the sum of its proper divisors (2864879).

88239798721 is a wasteful number, since it uses less digits than its factorization.

88239798721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2864878.

The product of its digits is 24385536, while the sum is 64.

The spelling of 88239798721 in words is "eighty-eight billion, two hundred thirty-nine million, seven hundred ninety-eight thousand, seven hundred twenty-one".