55500280778 has 16 divisors (see below), whose sum is σ = 89672265216. Its totient is φ = 25687366320.

The previous prime is 55500280763. The next prime is 55500280789. The reversal of 55500280778 is 87708200555.

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 7 ways as a sum of consecutive naturals, for example, 19458701 + ... + 19461552.

It is an arithmetic number, because the mean of its divisors is an integer number (5604516576).

Almost surely, 2^55500280778 is an apocalyptic number.

55500280778 is a deficient number, since it is larger than the sum of its proper divisors (34171984438).

55500280778 is a wasteful number, since it uses less digits than its factorization.

55500280778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38920309.

The product of its (nonzero) digits is 784000, while the sum is 47.

The spelling of 55500280778 in words is "fifty-five billion, five hundred million, two hundred eighty thousand, seven hundred seventy-eight".