211545130456 has 64 divisors (see below), whose sum is σ = 434947968000. Its totient is φ = 95659267200.

The previous prime is 211545130393. The next prime is 211545130457. The reversal of 211545130456 is 654031545112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211545130457) 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, 38244411 + ... + 38249941.

It is an arithmetic number, because the mean of its divisors is an integer number (6796062000).

Almost surely, 2^211545130456 is an apocalyptic number.

It is an amenable number.

211545130456 is an abundant number, since it is smaller than the sum of its proper divisors (223402837544).

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

211545130456 is a wasteful number, since it uses less digits than its factorization.

211545130456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7720 (or 7716 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

Adding to 211545130456 its reverse (654031545112), we get a palindrome (865576675568).

The spelling of 211545130456 in words is "two hundred eleven billion, five hundred forty-five million, one hundred thirty thousand, four hundred fifty-six".