211255576664 has 32 divisors (see below), whose sum is σ = 432141780240. Its totient is φ = 96019017600.

The previous prime is 211255576661. The next prime is 211255576691. The reversal of 211255576664 is 466675552112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211255576661) 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, 1452374 + ... + 1591194.

Almost surely, 2^211255576664 is an apocalyptic number.

It is an amenable number.

211255576664 is an abundant number, since it is smaller than the sum of its proper divisors (220886203576).

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

211255576664 is a wasteful number, since it uses less digits than its factorization.

211255576664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156131 (or 156127 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 50.

The spelling of 211255576664 in words is "two hundred eleven billion, two hundred fifty-five million, five hundred seventy-six thousand, six hundred sixty-four".