58781813616 has 160 divisors (see below), whose sum is σ = 183335884800. Its totient is φ = 17963804160.

The previous prime is 58781813599. The next prime is 58781813627. The reversal of 58781813616 is 61631818785.

58781813616 is a `hidden beast` number, since 5 + 8 + 7 + 8 + 1 + 8 + 13 + 616 = 666.

It is a super-2 number, since 2×58781813616² (a number of 22 digits) contains 22 as substring.

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 polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138940 + ... + 369956.

It is an arithmetic number, because the mean of its divisors is an integer number (1145849280).

Almost surely, 2^58781813616 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 58781813616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91667942400).

58781813616 is an abundant number, since it is smaller than the sum of its proper divisors (124554071184).

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

58781813616 is a wasteful number, since it uses less digits than its factorization.

58781813616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231084 (or 231072 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The spelling of 58781813616 in words is "fifty-eight billion, seven hundred eighty-one million, eight hundred thirteen thousand, six hundred sixteen".