82647681019929 has 9 divisors (see below), whose sum is σ = 119380023090133. Its totient is φ = 55098435831132.

The previous prime is 82647681019909. The next prime is 82647681019951. The reversal of 82647681019929 is 92991018674628.

The square root of 82647681019929 is 9091077.

It is a perfect power (a square), and thus also a powerful number.

82647681019929 is a `hidden beast` number, since 8 + 26 + 476 + 8 + 101 + 9 + 9 + 29 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 82647681019929 - 2⁹ = 82647681019417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82647681019909) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 25758052 + ... + 28788410.

Almost surely, 2^{82647681019929} is an apocalyptic number.

82647681019929 is the 9091077-th square number.

82647681019929 is the 4545539-th centered octagonal number.

It is an amenable number.

82647681019929 is a deficient number, since it is larger than the sum of its proper divisors (36732342070204).

82647681019929 is an frugal number, since it uses more digits than its factorization.

82647681019929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060724 (or 3030362 counting only the distinct ones).

The product of its (nonzero) digits is 188116992, while the sum is 72.

The spelling of 82647681019929 in words is "eighty-two trillion, six hundred forty-seven billion, six hundred eighty-one million, nineteen thousand, nine hundred twenty-nine".