212157261626672 has 80 divisors (see below), whose sum is σ = 437332194555264. Its totient is φ = 99358648320000.

The previous prime is 212157261626669. The next prime is 212157261626707. The reversal of 212157261626672 is 276626162751212.

212157261626672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 44753522 + ... + 49266542.

Almost surely, 2^{212157261626672} 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 212157261626672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218666097277632).

212157261626672 is an abundant number, since it is smaller than the sum of its proper divisors (225174932928592).

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

212157261626672 is a wasteful number, since it uses less digits than its factorization.

212157261626672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4513878 (or 4513872 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 56.

The spelling of 212157261626672 in words is "two hundred twelve trillion, one hundred fifty-seven billion, two hundred sixty-one million, six hundred twenty-six thousand, six hundred seventy-two".