83698054440 has 1536 divisors, whose sum is σ = 375072768000. Its totient is φ = 14718412800.

The previous prime is 83698054387. The next prime is 83698054501. The reversal of 83698054440 is 4445089638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 2699937225 + ... + 2699937255.

It is an arithmetic number, because the mean of its divisors is an integer number (244188000).

Almost surely, 2^83698054440 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 83698054440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187536384000).

83698054440 is an abundant number, since it is smaller than the sum of its proper divisors (291374713560).

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

83698054440 is a wasteful number, since it uses less digits than its factorization.

83698054440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 51.

The spelling of 83698054440 in words is "eighty-three billion, six hundred ninety-eight million, fifty-four thousand, four hundred forty".