81875308588 has 6 divisors (see below), whose sum is σ = 143281790036. Its totient is φ = 40937654292.

The previous prime is 81875308547. The next prime is 81875308601. The reversal of 81875308588 is 88580357818.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10234413570 + ... + 10234413577.

Almost surely, 2^81875308588 is an apocalyptic number.

It is an amenable number.

81875308588 is a deficient number, since it is larger than the sum of its proper divisors (61406481448).

81875308588 is a wasteful number, since it uses less digits than its factorization.

81875308588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20468827151 (or 20468827149 counting only the distinct ones).

The product of its (nonzero) digits is 17203200, while the sum is 61.

The spelling of 81875308588 in words is "eighty-one billion, eight hundred seventy-five million, three hundred eight thousand, five hundred eighty-eight".