3516551578722 has 128 divisors (see below), whose sum is σ = 9115213363200. Its totient is φ = 878291859456.

The previous prime is 3516551578667. The next prime is 3516551578747. The reversal of 3516551578722 is 2278751556153.

It is a super-2 number, since 2×3516551578722² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27499929 + ... + 27627507.

It is an arithmetic number, because the mean of its divisors is an integer number (71212604400).

Almost surely, 2^{3516551578722} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3516551578722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4557606681600).

3516551578722 is an abundant number, since it is smaller than the sum of its proper divisors (5598661784478).

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

3516551578722 is a wasteful number, since it uses less digits than its factorization.

3516551578722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130280.

The product of its digits is 17640000, while the sum is 57.

The spelling of 3516551578722 in words is "three trillion, five hundred sixteen billion, five hundred fifty-one million, five hundred seventy-eight thousand, seven hundred twenty-two".