55126827978 has 16 divisors (see below), whose sum is σ = 111345277536. Its totient is φ = 18193672400.

The previous prime is 55126827967. The next prime is 55126827989. The reversal of 55126827978 is 87972862155.

55126827978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55126827967) and next prime (55126827989).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45483576 + ... + 45484787.

It is an arithmetic number, because the mean of its divisors is an integer number (6959079846).

Almost surely, 2^55126827978 is an apocalyptic number.

55126827978 is an abundant number, since it is smaller than the sum of its proper divisors (56218449558).

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

55126827978 is a wasteful number, since it uses less digits than its factorization.

55126827978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90968469.

The product of its digits is 16934400, while the sum is 60.

The spelling of 55126827978 in words is "fifty-five billion, one hundred twenty-six million, eight hundred twenty-seven thousand, nine hundred seventy-eight".