201939844986916 has 81 divisors (see below), whose sum is σ = 363597681685329. Its totient is φ = 98135357497632.

The previous prime is 201939844986899. The next prime is 201939844986991. The reversal of 201939844986916 is 619689448939102.

The square root of 201939844986916 is 14210554.

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., 109766481302500 + 92173363684416 = 10476950^2 + 9600696^2 .

It is a super-2 number, since 2×201939844986916² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 455846150991 + ... + 455846151433.

Almost surely, 2^{201939844986916} is an apocalyptic number.

201939844986916 is the 14210554-th square number.

It is an amenable number.

201939844986916 is a deficient number, since it is larger than the sum of its proper divisors (161657836698413).

201939844986916 is an frugal number, since it uses more digits than its factorization.

201939844986916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722 (or 861 counting only the distinct ones).

The product of its (nonzero) digits is 1451188224, while the sum is 79.

The spelling of 201939844986916 in words is "two hundred one trillion, nine hundred thirty-nine billion, eight hundred forty-four million, nine hundred eighty-six thousand, nine hundred sixteen".