55008433978 has 20 divisors (see below), whose sum is σ = 87669896130. Its totient is φ = 25886243264.

The previous prime is 55008433967. The next prime is 55008433999. The reversal of 55008433978 is 87933480055.

55008433978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 27237211369 + 27771222609 = 165037^2 + 166647^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2388 + ... + 331696.

Almost surely, 2^55008433978 is an apocalyptic number.

55008433978 is a deficient number, since it is larger than the sum of its proper divisors (32661462152).

55008433978 is an frugal number, since it uses more digits than its factorization.

55008433978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329379 (or 329328 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 55008433978 in words is "fifty-five billion, eight million, four hundred thirty-three thousand, nine hundred seventy-eight".