940742866561 has 3 divisors (see below), whose sum is σ = 940743836481. Its totient is φ = 940741896642.

The previous prime is 940742866513. The next prime is 940742866579. The reversal of 940742866561 is 165668247049.

The square root of 940742866561 is 969919.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 940742866561 - 2¹³ = 940742858369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 940742866496 and 940742866505.

It is not an unprimeable number, because it can be changed into a prime (940742866961) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 484960 + ... + 1454878.

It is an arithmetic number, because the mean of its divisors is an integer number (313581278827).

Almost surely, 2^940742866561 is an apocalyptic number.

940742866561 is the 969919-th square number.

940742866561 is the 484960-th centered octagonal number.

It is an amenable number.

940742866561 is a deficient number, since it is larger than the sum of its proper divisors (969920).

940742866561 is an frugal number, since it uses more digits than its factorization.

940742866561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939838 (or 969919 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 940742866561 in words is "nine hundred forty billion, seven hundred forty-two million, eight hundred sixty-six thousand, five hundred sixty-one".