83975149440 has 960 divisors, whose sum is σ = 375834634560. Its totient is φ = 17710866432.

The previous prime is 83975149417. The next prime is 83975149451. The reversal of 83975149440 is 4494157938.

83975149440 is a `hidden beast` number, since 8 + 39 + 7 + 514 + 94 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 33020809 + ... + 33023351.

It is an arithmetic number, because the mean of its divisors is an integer number (391494411).

Almost surely, 2^83975149440 is an apocalyptic number.

83975149440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83975149440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187917317280).

83975149440 is an abundant number, since it is smaller than the sum of its proper divisors (291859485120).

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

83975149440 is a wasteful number, since it uses less digits than its factorization.

83975149440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2601 (or 2573 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 83975149440 in words is "eighty-three billion, nine hundred seventy-five million, one hundred forty-nine thousand, four hundred forty".