82355487858 has 90 divisors (see below), whose sum is σ = 214732501533. Its totient is φ = 23522834160.

The previous prime is 82355487847. The next prime is 82355487883. The reversal of 82355487858 is 85878455328.

It is a happy number.

82355487858 is a `hidden beast` number, since 8 + 2 + 3 + 5 + 548 + 7 + 85 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 75760911009 + 6594576849 = 275247^2 + 81207^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=202923.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 82355487795 and 82355487804.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 25566688 + ... + 25569908.

Almost surely, 2^82355487858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82355487858

82355487858 is an abundant number, since it is smaller than the sum of its proper divisors (132377013675).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82355487858 is an frugal number, since it uses more digits than its factorization.

82355487858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6470 (or 3233 counting only the distinct ones).

The product of its digits is 86016000, while the sum is 63.

The spelling of 82355487858 in words is "eighty-two billion, three hundred fifty-five million, four hundred eighty-seven thousand, eight hundred fifty-eight".