88210971491 has 2 divisors, whose sum is σ = 88210971492. Its totient is φ = 88210971490.

The previous prime is 88210971481. The next prime is 88210971503. The reversal of 88210971491 is 19417901288.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 88210971491 - 2⁶ = 88210971427 is a prime.

It is not a weakly prime, because it can be changed into another prime (88210971481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44105485745 + 44105485746.

It is an arithmetic number, because the mean of its divisors is an integer number (44105485746).

Almost surely, 2^88210971491 is an apocalyptic number.

88210971491 is a deficient number, since it is larger than the sum of its proper divisors (1).

88210971491 is an equidigital number, since it uses as much as digits as its factorization.

88210971491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 50.

The spelling of 88210971491 in words is "eighty-eight billion, two hundred ten million, nine hundred seventy-one thousand, four hundred ninety-one".