55000505054978 has 32 divisors (see below), whose sum is σ = 94530102312960. Its totient is φ = 23510793131280.

The previous prime is 55000505054969. The next prime is 55000505054987. The reversal of 55000505054978 is 87945050500055.

It is an interprime number because it is at equal distance from previous prime (55000505054969) and next prime (55000505054987).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21875843 + ... + 24260121.

It is an arithmetic number, because the mean of its divisors is an integer number (2954065697280).

Almost surely, 2^{55000505054978} is an apocalyptic number.

55000505054978 is a deficient number, since it is larger than the sum of its proper divisors (39529597257982).

55000505054978 is a wasteful number, since it uses less digits than its factorization.

55000505054978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388542.

The product of its (nonzero) digits is 6300000, while the sum is 53.

The spelling of 55000505054978 in words is "fifty-five trillion, five hundred five million, fifty-four thousand, nine hundred seventy-eight".