83781388248 has 32 divisors (see below), whose sum is σ = 209509713600. Its totient is φ = 27919630368.

The previous prime is 83781388139. The next prime is 83781388253. The reversal of 83781388248 is 84288318738.

It is a super-2 number, since 2×83781388248² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 83781388191 and 83781388200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377086 + ... + 556557.

It is an arithmetic number, because the mean of its divisors is an integer number (6547178550).

Almost surely, 2^83781388248 is an apocalyptic number.

It is an amenable number.

83781388248 is an abundant number, since it is smaller than the sum of its proper divisors (125728325352).

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

83781388248 is a wasteful number, since it uses less digits than its factorization.

83781388248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937391 (or 937387 counting only the distinct ones).

The product of its digits is 16515072, while the sum is 60.

The spelling of 83781388248 in words is "eighty-three billion, seven hundred eighty-one million, three hundred eighty-eight thousand, two hundred forty-eight".