945378873549 has 12 divisors (see below), whose sum is σ = 1489687922112. Its totient is φ = 572956893000.

The previous prime is 945378873533. The next prime is 945378873583.

945378873549 is a `hidden beast` number, since 9 + 4 + 5 + 3 + 7 + 8 + 8 + 73 + 549 = 666.

945378873549 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 945378873549 - 2⁴ = 945378873533 is a prime.

It is a super-2 number, since 2×945378873549² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945378873589) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4774640677 + ... + 4774640874.

It is an arithmetic number, because the mean of its divisors is an integer number (124140660176).

Almost surely, 2^945378873549 is an apocalyptic number.

945378873549 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

945378873549 is a deficient number, since it is larger than the sum of its proper divisors (544309048563).

945378873549 is a wasteful number, since it uses less digits than its factorization.

945378873549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9549281568 (or 9549281565 counting only the distinct ones).

The product of its digits is 914457600, while the sum is 72.

The spelling of 945378873549 in words is "nine hundred forty-five billion, three hundred seventy-eight million, eight hundred seventy-three thousand, five hundred forty-nine".