212455342554 has 64 divisors (see below), whose sum is σ = 530772566016. Its totient is φ = 55195867584.

The previous prime is 212455342553. The next prime is 212455342573. The reversal of 212455342554 is 455243554212.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (212455342553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2867242 + ... + 2940405.

It is an arithmetic number, because the mean of its divisors is an integer number (8293321344).

Almost surely, 2^212455342554 is an apocalyptic number.

212455342554 is an abundant number, since it is smaller than the sum of its proper divisors (318317223462).

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

212455342554 is a wasteful number, since it uses less digits than its factorization.

212455342554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5807739.

The product of its digits is 960000, while the sum is 42.

Adding to 212455342554 its reverse (455243554212), we get a palindrome (667698896766).

The spelling of 212455342554 in words is "two hundred twelve billion, four hundred fifty-five million, three hundred forty-two thousand, five hundred fifty-four".