218620131970 has 16 divisors (see below), whose sum is σ = 393529389120. Its totient is φ = 87445130224.

The previous prime is 218620131949. The next prime is 218620132007. The reversal of 218620131970 is 79131026812.

218620131970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37102 + ... + 662281.

It is an arithmetic number, because the mean of its divisors is an integer number (24595586820).

Almost surely, 2^218620131970 is an apocalyptic number.

218620131970 is a deficient number, since it is larger than the sum of its proper divisors (174909257150).

218620131970 is a wasteful number, since it uses less digits than its factorization.

218620131970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730649.

The product of its (nonzero) digits is 36288, while the sum is 40.

The spelling of 218620131970 in words is "two hundred eighteen billion, six hundred twenty million, one hundred thirty-one thousand, nine hundred seventy".