4545457072778 has 8 divisors (see below), whose sum is σ = 6818595923520. Its totient is φ = 2272591764940.

The previous prime is 4545457072747. The next prime is 4545457072789. The reversal of 4545457072778 is 8772707545454.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×4545457072778² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68344178 + ... + 68410653.

It is an arithmetic number, because the mean of its divisors is an integer number (852324490440).

Almost surely, 2^{4545457072778} is an apocalyptic number.

4545457072778 is a deficient number, since it is larger than the sum of its proper divisors (2273138850742).

4545457072778 is a wasteful number, since it uses less digits than its factorization.

4545457072778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136771452.

The product of its (nonzero) digits is 307328000, while the sum is 65.

The spelling of 4545457072778 in words is "four trillion, five hundred forty-five billion, four hundred fifty-seven million, seventy-two thousand, seven hundred seventy-eight".