211465253240 has 16 divisors (see below), whose sum is σ = 475796819880. Its totient is φ = 84586101280.

The previous prime is 211465253239. The next prime is 211465253257. The reversal of 211465253240 is 42352564112.

It is a self number, because there is not a number n which added to its sum of digits gives 211465253240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2643315626 + ... + 2643315705.

Almost surely, 2^211465253240 is an apocalyptic number.

211465253240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211465253240 is an abundant number, since it is smaller than the sum of its proper divisors (264331566640).

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

211465253240 is a wasteful number, since it uses less digits than its factorization.

211465253240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5286631342 (or 5286631338 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 211465253240 in words is "two hundred eleven billion, four hundred sixty-five million, two hundred fifty-three thousand, two hundred forty".