82654555381 has 4 divisors (see below), whose sum is σ = 82688840064. Its totient is φ = 82620270700.

The previous prime is 82654555351. The next prime is 82654555393. The reversal of 82654555381 is 18355545628.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82654555381 is a prime.

It is a super-2 number, since 2×82654555381² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82654555331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17138725 + ... + 17143546.

It is an arithmetic number, because the mean of its divisors is an integer number (20672210016).

Almost surely, 2^82654555381 is an apocalyptic number.

It is an amenable number.

82654555381 is a deficient number, since it is larger than the sum of its proper divisors (34284683).

82654555381 is a wasteful number, since it uses less digits than its factorization.

82654555381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34284682.

The product of its digits is 5760000, while the sum is 52.

The spelling of 82654555381 in words is "eighty-two billion, six hundred fifty-four million, five hundred fifty-five thousand, three hundred eighty-one".