211454450152255 has 4 divisors (see below), whose sum is σ = 253745340182712. Its totient is φ = 169163560121800.

The previous prime is 211454450152219. The next prime is 211454450152303. The reversal of 211454450152255 is 552251054454112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-211454450152255 is a prime.

It is a Duffinian number.

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, 21145445015221 + ... + 21145445015230.

It is an arithmetic number, because the mean of its divisors is an integer number (63436335045678).

Almost surely, 2^{211454450152255} is an apocalyptic number.

211454450152255 is a deficient number, since it is larger than the sum of its proper divisors (42290890030457).

211454450152255 is an equidigital number, since it uses as much as digits as its factorization.

211454450152255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42290890030456.

The product of its (nonzero) digits is 1600000, while the sum is 46.

The spelling of 211454450152255 in words is "two hundred eleven trillion, four hundred fifty-four billion, four hundred fifty million, one hundred fifty-two thousand, two hundred fifty-five".