945273389761 has 4 divisors (see below), whose sum is σ = 970821319252. Its totient is φ = 919725460272.

The previous prime is 945273389729. The next prime is 945273389789. The reversal of 945273389761 is 167983372549.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 167983372549 = 8273 ⋅20305013.

It can be written as a sum of positive squares in 2 ways, for example, as 869287710736 + 75985679025 = 932356^2 + 275655^2 .

It is a cyclic number.

It is not a de Polignac number, because 945273389761 - 2⁵ = 945273389729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 945273389693 and 945273389702.

It is not an unprimeable number, because it can be changed into a prime (945273389791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12773964690 + ... + 12773964763.

It is an arithmetic number, because the mean of its divisors is an integer number (242705329813).

Almost surely, 2^945273389761 is an apocalyptic number.

It is an amenable number.

945273389761 is a deficient number, since it is larger than the sum of its proper divisors (25547929491).

945273389761 is a wasteful number, since it uses less digits than its factorization.

945273389761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25547929490.

The product of its digits is 68584320, while the sum is 64.

The spelling of 945273389761 in words is "nine hundred forty-five billion, two hundred seventy-three million, three hundred eighty-nine thousand, seven hundred sixty-one".