210468018978 has 64 divisors (see below), whose sum is σ = 540527904000. Its totient is φ = 59458050432.

The previous prime is 210468018977. The next prime is 210468018989. The reversal of 210468018978 is 879810864012.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (210468018977) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3094413 + ... + 3161696.

It is an arithmetic number, because the mean of its divisors is an integer number (8445748500).

Almost surely, 2^210468018978 is an apocalyptic number.

210468018978 is an abundant number, since it is smaller than the sum of its proper divisors (330059885022).

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

210468018978 is a wasteful number, since it uses less digits than its factorization.

210468018978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6256216 (or 6256210 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The spelling of 210468018978 in words is "two hundred ten billion, four hundred sixty-eight million, eighteen thousand, nine hundred seventy-eight".