11428454745 has 24 divisors (see below), whose sum is σ = 19876953096. Its totient is φ = 6074366208.

The previous prime is 11428454743. The next prime is 11428454749. The reversal of 11428454745 is 54745482411.

11428454745 is a `hidden beast` number, since 114 + 28 + 45 + 474 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7943087376 + 3485367369 = 89124^2 + 59037^2 .

It is not a de Polignac number, because 11428454745 - 2¹ = 11428454743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 11428454745.

It is not an unprimeable number, because it can be changed into a prime (11428454743) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 420204 + ... + 446573.

It is an arithmetic number, because the mean of its divisors is an integer number (828206379).

Almost surely, 2^11428454745 is an apocalyptic number.

11428454745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11428454745 is a deficient number, since it is larger than the sum of its proper divisors (8448498351).

11428454745 is a wasteful number, since it uses less digits than its factorization.

11428454745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867081 (or 867078 counting only the distinct ones).

The product of its digits is 716800, while the sum is 45.

The spelling of 11428454745 in words is "eleven billion, four hundred twenty-eight million, four hundred fifty-four thousand, seven hundred forty-five".