82381965420 has 48 divisors (see below), whose sum is σ = 230699040768. Its totient is φ = 21965711040.

The previous prime is 82381965401. The next prime is 82381965427. The reversal of 82381965420 is 2456918328.

It is a self number, because there is not a number n which added to its sum of digits gives 82381965420.

It is not an unprimeable number, because it can be changed into a prime (82381965427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407647 + ... + 575273.

It is an arithmetic number, because the mean of its divisors is an integer number (4806230016).

Almost surely, 2^82381965420 is an apocalyptic number.

It is an amenable number.

82381965420 is an abundant number, since it is smaller than the sum of its proper divisors (148317075348).

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

82381965420 is a wasteful number, since it uses less digits than its factorization.

82381965420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175830 (or 175828 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 82381965420 in words is "eighty-two billion, three hundred eighty-one million, nine hundred sixty-five thousand, four hundred twenty".