4661754476778 has 64 divisors (see below), whose sum is σ = 12040043904000. Its totient is φ = 1309354762032.

The previous prime is 4661754476777. The next prime is 4661754476783. The reversal of 4661754476778 is 8776744571664.

4661754476778 is a `hidden beast` number, since 4 + 6 + 6 + 1 + 7 + 544 + 7 + 6 + 7 + 78 = 666.

It is a super-2 number, since 2×4661754476778² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4661754476777) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104491968 + ... + 104536571.

It is an arithmetic number, because the mean of its divisors is an integer number (188125686000).

Almost surely, 2^{4661754476778} is an apocalyptic number.

4661754476778 is an abundant number, since it is smaller than the sum of its proper divisors (7378289427222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4661754476778 is a wasteful number, since it uses less digits than its factorization.

4661754476778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209028616 (or 209028610 counting only the distinct ones).

The product of its digits is 1327656960, while the sum is 72.

The spelling of 4661754476778 in words is "four trillion, six hundred sixty-one billion, seven hundred fifty-four million, four hundred seventy-six thousand, seven hundred seventy-eight".