212545137151 has 4 divisors (see below), whose sum is σ = 215538730704. Its totient is φ = 209551543600.

The previous prime is 212545137143. The next prime is 212545137221. The reversal of 212545137151 is 151731545212.

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

It is a cyclic number.

It is not a de Polignac number, because 212545137151 - 2³ = 212545137143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212545137151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212545135151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1496796670 + ... + 1496796811.

It is an arithmetic number, because the mean of its divisors is an integer number (53884682676).

Almost surely, 2^212545137151 is an apocalyptic number.

212545137151 is a deficient number, since it is larger than the sum of its proper divisors (2993593553).

212545137151 is an equidigital number, since it uses as much as digits as its factorization.

212545137151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2993593552.

The product of its digits is 42000, while the sum is 37.

The spelling of 212545137151 in words is "two hundred twelve billion, five hundred forty-five million, one hundred thirty-seven thousand, one hundred fifty-one".