211011053456 has 80 divisors (see below), whose sum is σ = 485100284928. Its totient is φ = 87009984000.

The previous prime is 211011053441. The next prime is 211011053459. The reversal of 211011053456 is 654350110112.

211011053456 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×211011053456² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211011053459) 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, 425006 + ... + 776306.

Almost surely, 2^211011053456 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 211011053456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242550142464).

211011053456 is an abundant number, since it is smaller than the sum of its proper divisors (274089231472).

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

211011053456 is a wasteful number, since it uses less digits than its factorization.

211011053456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351520 (or 351514 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 211011053456 its reverse (654350110112), we get a palindrome (865361163568).

The spelling of 211011053456 in words is "two hundred eleven billion, eleven million, fifty-three thousand, four hundred fifty-six".