212978186976 has 96 divisors (see below), whose sum is σ = 579580904448. Its totient is φ = 68407557120.

The previous prime is 212978186951. The next prime is 212978186983. The reversal of 212978186976 is 679681879212.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539835 + ... + 846981.

It is an arithmetic number, because the mean of its divisors is an integer number (6037301088).

Almost surely, 2^212978186976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212978186976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289790452224).

212978186976 is an abundant number, since it is smaller than the sum of its proper divisors (366602717472).

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

212978186976 is a wasteful number, since it uses less digits than its factorization.

212978186976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307424 (or 307416 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 66.

The spelling of 212978186976 in words is "two hundred twelve billion, nine hundred seventy-eight million, one hundred eighty-six thousand, nine hundred seventy-six".