88751220378889 has 2 divisors, whose sum is σ = 88751220378890. Its totient is φ = 88751220378888.

The previous prime is 88751220378881. The next prime is 88751220378923. The reversal of 88751220378889 is 98887302215788.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46847180250000 + 41904040128889 = 6844500^2 + 6473333^2 .

It is a cyclic number.

It is not a de Polignac number, because 88751220378889 - 2³ = 88751220378881 is a prime.

It is not a weakly prime, because it can be changed into another prime (88751220378881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44375610189444 + 44375610189445.

It is an arithmetic number, because the mean of its divisors is an integer number (44375610189445).

Almost surely, 2^{88751220378889} is an apocalyptic number.

It is an amenable number.

88751220378889 is a deficient number, since it is larger than the sum of its proper divisors (1).

88751220378889 is an equidigital number, since it uses as much as digits as its factorization.

88751220378889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 867041280, while the sum is 76.

The spelling of 88751220378889 in words is "eighty-eight trillion, seven hundred fifty-one billion, two hundred twenty million, three hundred seventy-eight thousand, eight hundred eighty-nine".