983136978408 has 128 divisors (see below), whose sum is σ = 2661751572480. Its totient is φ = 300811380480.

The previous prime is 983136978407. The next prime is 983136978427. The reversal of 983136978408 is 804879631389.

It is not an unprimeable number, because it can be changed into a prime (983136978401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46843485 + ... + 46864467.

It is an arithmetic number, because the mean of its divisors is an integer number (20794934160).

Almost surely, 2^983136978408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 983136978408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1330875786240).

983136978408 is an abundant number, since it is smaller than the sum of its proper divisors (1678614594072).

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

983136978408 is a wasteful number, since it uses less digits than its factorization.

983136978408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21839 (or 21835 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 66.

The spelling of 983136978408 in words is "nine hundred eighty-three billion, one hundred thirty-six million, nine hundred seventy-eight thousand, four hundred eight".