83440768352370 has 256 divisors, whose sum is σ = 238666744995840. Its totient is φ = 18402502809600.

The previous prime is 83440768352353. The next prime is 83440768352371. The reversal of 83440768352370 is 7325386704438.

It is not an unprimeable number, because it can be changed into a prime (83440768352371) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 879303886 + ... + 879398774.

It is an arithmetic number, because the mean of its divisors is an integer number (932291972640).

Almost surely, 2^{83440768352370} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83440768352370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119333372497920).

83440768352370 is an abundant number, since it is smaller than the sum of its proper divisors (155225976643470).

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

83440768352370 is a wasteful number, since it uses less digits than its factorization.

83440768352370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97881.

The product of its (nonzero) digits is 81285120, while the sum is 60.

The spelling of 83440768352370 in words is "eighty-three trillion, four hundred forty billion, seven hundred sixty-eight million, three hundred fifty-two thousand, three hundred seventy".