212575153545 has 16 divisors (see below), whose sum is σ = 377911384320. Its totient is φ = 113373415152.

The previous prime is 212575153541. The next prime is 212575153621. The reversal of 212575153545 is 545351575212.

212575153545 is a `hidden beast` number, since 2 + 1 + 2 + 5 + 7 + 51 + 53 + 545 = 666.

It is not a de Polignac number, because 212575153545 - 2² = 212575153541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 212575153545.

It is not an unprimeable number, because it can be changed into a prime (212575153541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 787315249 + ... + 787315518.

It is an arithmetic number, because the mean of its divisors is an integer number (23619461520).

Almost surely, 2^212575153545 is an apocalyptic number.

It is an amenable number.

212575153545 is a deficient number, since it is larger than the sum of its proper divisors (165336230775).

212575153545 is a wasteful number, since it uses less digits than its factorization.

212575153545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574630781 (or 1574630775 counting only the distinct ones).

The product of its digits is 1050000, while the sum is 45.

The spelling of 212575153545 in words is "two hundred twelve billion, five hundred seventy-five million, one hundred fifty-three thousand, five hundred forty-five".