916319121540 has 96 divisors (see below), whose sum is σ = 2650983444480. Its totient is φ = 236243952000.

The previous prime is 916319121521. The next prime is 916319121593. The reversal of 916319121540 is 45121913619.

It is a junction number, because it is equal to n+sod(n) for n = 916319121492 and 916319121501.

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, 1720491 + ... + 2189229.

It is an arithmetic number, because the mean of its divisors is an integer number (27614410880).

Almost surely, 2^916319121540 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 916319121540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1325491722240).

916319121540 is an abundant number, since it is smaller than the sum of its proper divisors (1734664322940).

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

916319121540 is a wasteful number, since it uses less digits than its factorization.

916319121540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469833 (or 469831 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 42.

The spelling of 916319121540 in words is "nine hundred sixteen billion, three hundred nineteen million, one hundred twenty-one thousand, five hundred forty".