211401562064 has 40 divisors (see below), whose sum is σ = 510658321728. Its totient is φ = 82364244480.

The previous prime is 211401562061. The next prime is 211401562067. The reversal of 211401562064 is 460265104112.

It is an interprime number because it is at equal distance from previous prime (211401562061) and next prime (211401562067).

It is a self number, because there is not a number n which added to its sum of digits gives 211401562064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211401562061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85794857 + ... + 85797320.

Almost surely, 2^211401562064 is an apocalyptic number.

It is an amenable number.

211401562064 is an abundant number, since it is smaller than the sum of its proper divisors (299256759664).

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

211401562064 is a wasteful number, since it uses less digits than its factorization.

211401562064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171592203 (or 171592197 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

Adding to 211401562064 its reverse (460265104112), we get a palindrome (671666666176).

The spelling of 211401562064 in words is "two hundred eleven billion, four hundred one million, five hundred sixty-two thousand, sixty-four".