4661778155 has 8 divisors (see below), whose sum is σ = 5888562000. Its totient is φ = 3533137056.

The previous prime is 4661778139. The next prime is 4661778167. The reversal of 4661778155 is 5518771664.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4661778155 - 2⁴ = 4661778139 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24535580 + ... + 24535769.

It is an arithmetic number, because the mean of its divisors is an integer number (736070250).

Almost surely, 2^4661778155 is an apocalyptic number.

4661778155 is a deficient number, since it is larger than the sum of its proper divisors (1226783845).

4661778155 is a wasteful number, since it uses less digits than its factorization.

4661778155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49071373.

The product of its digits is 1411200, while the sum is 50.

The square root of 4661778155 is about 68277.2154895028. The cubic root of 4661778155 is about 1670.5155943224.

The spelling of 4661778155 in words is "four billion, six hundred sixty-one million, seven hundred seventy-eight thousand, one hundred fifty-five".