82541556387 has 12 divisors (see below), whose sum is σ = 122285998920. Its totient is φ = 55026709020.

The previous prime is 82541556371. The next prime is 82541556401. The reversal of 82541556387 is 78365514528.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

82541556387 is a `hidden beast` number, since 8 + 2 + 5 + 4 + 1 + 556 + 3 + 87 = 666.

It is not a de Polignac number, because 82541556387 - 2⁴ = 82541556371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82541556367) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1465212 + ... + 1520502.

It is an arithmetic number, because the mean of its divisors is an integer number (10190499910).

Almost surely, 2^82541556387 is an apocalyptic number.

82541556387 is a deficient number, since it is larger than the sum of its proper divisors (39744442533).

82541556387 is an frugal number, since it uses more digits than its factorization.

82541556387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110591 (or 55294 counting only the distinct ones).

The product of its digits is 8064000, while the sum is 54.

The spelling of 82541556387 in words is "eighty-two billion, five hundred forty-one million, five hundred fifty-six thousand, three hundred eighty-seven".