9874652620816 has 45 divisors (see below), whose sum is σ = 19195644019293. Its totient is φ = 4920992136000.

The previous prime is 9874652620813. The next prime is 9874652620817. The reversal of 9874652620816 is 6180262564789.

The square root of 9874652620816 is 3142396.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7247919302416 + 2626733318400 = 2692196^2 + 1620720^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9874652620813) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4386783691 + ... + 4386785941.

Almost surely, 2^{9874652620816} is an apocalyptic number.

9874652620816 is the 3142396-th square number.

It is an amenable number.

9874652620816 is a deficient number, since it is larger than the sum of its proper divisors (9320991398477).

9874652620816 is an frugal number, since it uses more digits than its factorization.

9874652620816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5208 (or 2602 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 64.

Multiplying 9874652620816 by its sum of digits (64), we get a square (631977767732224 = 25139168²).

The spelling of 9874652620816 in words is "nine trillion, eight hundred seventy-four billion, six hundred fifty-two million, six hundred twenty thousand, eight hundred sixteen".