74786819652 has 144 divisors (see below), whose sum is σ = 203520949632. Its totient is φ = 23112552960.

The previous prime is 74786819651. The next prime is 74786819659. The reversal of 74786819652 is 25691868747.

It is a super-2 number, since 2×74786819652² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 74786819652.

It is not an unprimeable number, because it can be changed into a prime (74786819651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2332393 + ... + 2364239.

It is an arithmetic number, because the mean of its divisors is an integer number (1413339928).

Almost surely, 2^74786819652 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 74786819652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101760474816).

74786819652 is an abundant number, since it is smaller than the sum of its proper divisors (128734129980).

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

74786819652 is a wasteful number, since it uses less digits than its factorization.

74786819652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31978 (or 31973 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 63.

The spelling of 74786819652 in words is "seventy-four billion, seven hundred eighty-six million, eight hundred nineteen thousand, six hundred fifty-two".