88178140331621 has 2 divisors, whose sum is σ = 88178140331622. Its totient is φ = 88178140331620.

The previous prime is 88178140331579. The next prime is 88178140331623. The reversal of 88178140331621 is 12613304187188.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52161458399521 + 36016681932100 = 7222289^2 + 6001390^2 .

It is a cyclic number.

It is not a de Polignac number, because 88178140331621 - 2⁶ = 88178140331557 is a prime.

Together with 88178140331623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88178140331623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44089070165810 + 44089070165811.

It is an arithmetic number, because the mean of its divisors is an integer number (44089070165811).

Almost surely, 2^{88178140331621} is an apocalyptic number.

It is an amenable number.

88178140331621 is a deficient number, since it is larger than the sum of its proper divisors (1).

88178140331621 is an equidigital number, since it uses as much as digits as its factorization.

88178140331621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1548288, while the sum is 53.

The spelling of 88178140331621 in words is "eighty-eight trillion, one hundred seventy-eight billion, one hundred forty million, three hundred thirty-one thousand, six hundred twenty-one".