212404657630 has 32 divisors (see below), whose sum is σ = 417665756160. Its totient is φ = 77130604320.

The previous prime is 212404657601. The next prime is 212404657639. The reversal of 212404657630 is 36756404212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212404657639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1263714 + ... + 1421893.

It is an arithmetic number, because the mean of its divisors is an integer number (13052054880).

Almost surely, 2^212404657630 is an apocalyptic number.

212404657630 is a deficient number, since it is larger than the sum of its proper divisors (205261098530).

212404657630 is a wasteful number, since it uses less digits than its factorization.

212404657630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686344.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 212404657630 in words is "two hundred twelve billion, four hundred four million, six hundred fifty-seven thousand, six hundred thirty".