88461899987838 has 128 divisors (see below), whose sum is σ = 196762245120000. Its totient is φ = 26345371837824.

The previous prime is 88461899987777. The next prime is 88461899987843. The reversal of 88461899987838 is 83878999816488.

It is a congruent number.

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, 130178433 + ... + 130856211.

It is an arithmetic number, because the mean of its divisors is an integer number (1537205040000).

Almost surely, 2^{88461899987838} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 88461899987838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98381122560000).

88461899987838 is an abundant number, since it is smaller than the sum of its proper divisors (108300345132162).

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

88461899987838 is a wasteful number, since it uses less digits than its factorization.

88461899987838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678294.

The product of its digits is 96315899904, while the sum is 96.

The spelling of 88461899987838 in words is "eighty-eight trillion, four hundred sixty-one billion, eight hundred ninety-nine million, nine hundred eighty-seven thousand, eight hundred thirty-eight".