210023656040 has 64 divisors (see below), whose sum is σ = 521304984000. Its totient is φ = 75514109440.

The previous prime is 210023656021. The next prime is 210023656067. The reversal of 210023656040 is 40656320012.

It is a junction number, because it is equal to n+sod(n) for n = 210023655994 and 210023656012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2642450 + ... + 2720769.

It is an arithmetic number, because the mean of its divisors is an integer number (8145390375).

Almost surely, 2^210023656040 is an apocalyptic number.

210023656040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210023656040 is an abundant number, since it is smaller than the sum of its proper divisors (311281327960).

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

210023656040 is a wasteful number, since it uses less digits than its factorization.

210023656040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5363330 (or 5363326 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 210023656040 its reverse (40656320012), we get a palindrome (250679976052).

The spelling of 210023656040 in words is "two hundred ten billion, twenty-three million, six hundred fifty-six thousand, forty".