945547929745549 has 4 divisors (see below), whose sum is σ = 1018282385879836. Its totient is φ = 872813473611264.

The previous prime is 945547929745541. The next prime is 945547929745577.

945547929745549 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 287352741996324 + 658195187749225 = 16951482^2 + 25655315^2 .

It is a cyclic number.

It is not a de Polignac number, because 945547929745549 - 2³ = 945547929745541 is a prime.

It is a super-2 number, since 2×945547929745549² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 945547929745549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945547929745541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36367228067124 + ... + 36367228067149.

It is an arithmetic number, because the mean of its divisors is an integer number (254570596469959).

Almost surely, 2^{945547929745549} is an apocalyptic number.

It is an amenable number.

945547929745549 is a deficient number, since it is larger than the sum of its proper divisors (72734456134287).

945547929745549 is a wasteful number, since it uses less digits than its factorization.

945547929745549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72734456134286.

The product of its digits is 102876480000, while the sum is 88.

The spelling of 945547929745549 in words is "nine hundred forty-five trillion, five hundred forty-seven billion, nine hundred twenty-nine million, seven hundred forty-five thousand, five hundred forty-nine".