945404237761 has 3 divisors (see below), whose sum is σ = 945405210081. Its totient is φ = 945403265442.

The previous prime is 945404237699. The next prime is 945404237803. The reversal of 945404237761 is 167732404549.

It is a happy number.

The square root of 945404237761 is 972319.

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, and also an emirpimes, since its reverse is a distinct semiprime: 167732404549 = 59 ⋅2842922111.

It is not a de Polignac number, because 945404237761 - 2³³ = 936814303169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 945404237699 and 945404237708.

It is not an unprimeable number, because it can be changed into a prime (945404237861) 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, 486160 + ... + 1458478.

It is an arithmetic number, because the mean of its divisors is an integer number (315135070027).

Almost surely, 2^945404237761 is an apocalyptic number.

945404237761 is the 972319-th square number.

945404237761 is the 486160-th centered octagonal number.

It is an amenable number.

945404237761 is a deficient number, since it is larger than the sum of its proper divisors (972320).

945404237761 is an frugal number, since it uses more digits than its factorization.

945404237761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944638 (or 972319 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 52.

The spelling of 945404237761 in words is "nine hundred forty-five billion, four hundred four million, two hundred thirty-seven thousand, seven hundred sixty-one".