54778543066 has 32 divisors (see below), whose sum is σ = 95417582400. Its totient is φ = 23367553920.

The previous prime is 54778543051. The next prime is 54778543067. The reversal of 54778543066 is 66034587745.

54778543066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 54778542998 and 54778543016.

It is not an unprimeable number, because it can be changed into a prime (54778543067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1332036 + ... + 1372543.

It is an arithmetic number, because the mean of its divisors is an integer number (2981799450).

Almost surely, 2^54778543066 is an apocalyptic number.

54778543066 is a deficient number, since it is larger than the sum of its proper divisors (40639039334).

54778543066 is a wasteful number, since it uses less digits than its factorization.

54778543066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2704654.

The product of its (nonzero) digits is 16934400, while the sum is 55.

The spelling of 54778543066 in words is "fifty-four billion, seven hundred seventy-eight million, five hundred forty-three thousand, sixty-six".