82420136536 has 8 divisors (see below), whose sum is σ = 154537756020. Its totient is φ = 41210068264.

The previous prime is 82420136489. The next prime is 82420136543. The reversal of 82420136536 is 63563102428.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×82420136536² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 5151258526 + ... + 5151258541.

Almost surely, 2^82420136536 is an apocalyptic number.

It is an amenable number.

82420136536 is a deficient number, since it is larger than the sum of its proper divisors (72117619484).

82420136536 is a wasteful number, since it uses less digits than its factorization.

82420136536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10302517073 (or 10302517069 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 82420136536 in words is "eighty-two billion, four hundred twenty million, one hundred thirty-six thousand, five hundred thirty-six".