2130555678 has 16 divisors (see below), whose sum is σ = 4270823040. Its totient is φ = 708566616.

The previous prime is 2130555677. The next prime is 2130555689. The reversal of 2130555678 is 8765550312.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130555677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401800 + ... + 407067.

It is an arithmetic number, because the mean of its divisors is an integer number (266926440).

Almost surely, 2^2130555678 is an apocalyptic number.

2130555678 is an abundant number, since it is smaller than the sum of its proper divisors (2140267362).

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

2130555678 is a wasteful number, since it uses less digits than its factorization.

2130555678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809311.

The product of its (nonzero) digits is 252000, while the sum is 42.

The square root of 2130555678 is about 46157.9427401179. The cubic root of 2130555678 is about 1286.7602291608.

The spelling of 2130555678 in words is "two billion, one hundred thirty million, five hundred fifty-five thousand, six hundred seventy-eight".