212191642080 has 576 divisors, whose sum is σ = 820004290560. Its totient is φ = 49500979200.

The previous prime is 212191642073. The next prime is 212191642099. The reversal of 212191642080 is 80246191212.

212191642080 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 9 + 1 + 642 + 0 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 94769601 + ... + 94771839.

It is an arithmetic number, because the mean of its divisors is an integer number (1423618560).

Almost surely, 2^212191642080 is an apocalyptic number.

212191642080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212191642080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (410002145280).

212191642080 is an abundant number, since it is smaller than the sum of its proper divisors (607812648480).

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

212191642080 is a wasteful number, since it uses less digits than its factorization.

212191642080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495 (or 2484 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The spelling of 212191642080 in words is "two hundred twelve billion, one hundred ninety-one million, six hundred forty-two thousand, eighty".