82801866428 has 12 divisors (see below), whose sum is σ = 144907594272. Its totient is φ = 41399696640.

The previous prime is 82801866421. The next prime is 82801866491. The reversal of 82801866428 is 82466810828.

It is a super-2 number, since 2×82801866428² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 82801866428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82801866421) 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, 149300 + ... + 433467.

It is an arithmetic number, because the mean of its divisors is an integer number (12075632856).

Almost surely, 2^82801866428 is an apocalyptic number.

It is an amenable number.

82801866428 is a deficient number, since it is larger than the sum of its proper divisors (62105727844).

82801866428 is a wasteful number, since it uses less digits than its factorization.

82801866428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618292 (or 618290 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 53.

The spelling of 82801866428 in words is "eighty-two billion, eight hundred one million, eight hundred sixty-six thousand, four hundred twenty-eight".