82649153691 has 24 divisors (see below), whose sum is σ = 136128021120. Its totient is φ = 47869191936.

The previous prime is 82649153681. The next prime is 82649153737. The reversal of 82649153691 is 19635194628.

82649153691 is a `hidden beast` number, since 8 + 264 + 9 + 15 + 369 + 1 = 666.

It is not a de Polignac number, because 82649153691 - 2⁹ = 82649153179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82649153611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20774571 + ... + 20778548.

It is an arithmetic number, because the mean of its divisors is an integer number (5672000880).

Almost surely, 2^82649153691 is an apocalyptic number.

82649153691 is a deficient number, since it is larger than the sum of its proper divisors (53478867429).

82649153691 is a wasteful number, since it uses less digits than its factorization.

82649153691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41553155 (or 41553152 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The spelling of 82649153691 in words is "eighty-two billion, six hundred forty-nine million, one hundred fifty-three thousand, six hundred ninety-one".