83390780154920 has 256 divisors, whose sum is σ = 217285091481600. Its totient is φ = 28213222947840.

The previous prime is 83390780154797. The next prime is 83390780154937. The reversal of 83390780154920 is 2945108709338.

83390780154920 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 83390780154920.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8281927646 + ... + 8281937714.

It is an arithmetic number, because the mean of its divisors is an integer number (848769888600).

Almost surely, 2^{83390780154920} 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 83390780154920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108642545740800).

83390780154920 is an abundant number, since it is smaller than the sum of its proper divisors (133894311326680).

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

83390780154920 is a wasteful number, since it uses less digits than its factorization.

83390780154920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11248 (or 11244 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 83390780154920 in words is "eighty-three trillion, three hundred ninety billion, seven hundred eighty million, one hundred fifty-four thousand, nine hundred twenty".