55316778782 has 8 divisors (see below), whose sum is σ = 83002826352. Its totient is φ = 27649170000.

The previous prime is 55316778773. The next prime is 55316778841. The reversal of 55316778782 is 28787761355.

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

It is a congruent number.

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, 4602194 + ... + 4614197.

It is an arithmetic number, because the mean of its divisors is an integer number (10375353294).

Almost surely, 2^55316778782 is an apocalyptic number.

55316778782 is a deficient number, since it is larger than the sum of its proper divisors (27686047570).

55316778782 is a wasteful number, since it uses less digits than its factorization.

55316778782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9219394.

The product of its digits is 19756800, while the sum is 59.

The spelling of 55316778782 in words is "fifty-five billion, three hundred sixteen million, seven hundred seventy-eight thousand, seven hundred eighty-two".