88138401191 has 2 divisors, whose sum is σ = 88138401192. Its totient is φ = 88138401190.

The previous prime is 88138401173. The next prime is 88138401289. The reversal of 88138401191 is 19110483188.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88138401191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88138401391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44069200595 + 44069200596.

It is an arithmetic number, because the mean of its divisors is an integer number (44069200596).

Almost surely, 2^88138401191 is an apocalyptic number.

88138401191 is a deficient number, since it is larger than the sum of its proper divisors (1).

88138401191 is an equidigital number, since it uses as much as digits as its factorization.

88138401191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 44.

The spelling of 88138401191 in words is "eighty-eight billion, one hundred thirty-eight million, four hundred one thousand, one hundred ninety-one".