212575153544 has 64 divisors (see below), whose sum is σ = 452162760000. Its totient is φ = 92879343360.

The previous prime is 212575153541. The next prime is 212575153621. The reversal of 212575153544 is 445351575212.

It is a junction number, because it is equal to n+sod(n) for n = 212575153495 and 212575153504.

It is not an unprimeable number, because it can be changed into a prime (212575153541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2689907 + ... + 2767805.

It is an arithmetic number, because the mean of its divisors is an integer number (7065043125).

Almost surely, 2^212575153544 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 212575153544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226081380000).

212575153544 is an abundant number, since it is smaller than the sum of its proper divisors (239587606456).

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

212575153544 is a wasteful number, since it uses less digits than its factorization.

212575153544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79318 (or 79314 counting only the distinct ones).

The product of its digits is 840000, while the sum is 44.

The spelling of 212575153544 in words is "two hundred twelve billion, five hundred seventy-five million, one hundred fifty-three thousand, five hundred forty-four".