212053145545 has 8 divisors (see below), whose sum is σ = 255528478080. Its totient is φ = 168932714160.

The previous prime is 212053145539. The next prime is 212053145569. The reversal of 212053145545 is 545541350212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212053145545 - 2³⁷ = 74614192073 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88723971 + ... + 88726360.

It is an arithmetic number, because the mean of its divisors is an integer number (31941059760).

Almost surely, 2^212053145545 is an apocalyptic number.

It is an amenable number.

212053145545 is a deficient number, since it is larger than the sum of its proper divisors (43475332535).

212053145545 is a wasteful number, since it uses less digits than its factorization.

212053145545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177450575.

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 212053145545 its reverse (545541350212), we get a palindrome (757594495757).

The spelling of 212053145545 in words is "two hundred twelve billion, fifty-three million, one hundred forty-five thousand, five hundred forty-five".