212720518767 has 4 divisors (see below), whose sum is σ = 283627358360. Its totient is φ = 141813679176.

The previous prime is 212720518741. The next prime is 212720518793. The reversal of 212720518767 is 767815027212.

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

It is an interprime number because it is at equal distance from previous prime (212720518741) and next prime (212720518793).

It is not a de Polignac number, because 212720518767 - 2¹⁴ = 212720502383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212720518867) 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, 35453419792 + ... + 35453419797.

It is an arithmetic number, because the mean of its divisors is an integer number (70906839590).

Almost surely, 2^212720518767 is an apocalyptic number.

212720518767 is a deficient number, since it is larger than the sum of its proper divisors (70906839593).

212720518767 is an equidigital number, since it uses as much as digits as its factorization.

212720518767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70906839592.

The product of its (nonzero) digits is 658560, while the sum is 48.

The spelling of 212720518767 in words is "two hundred twelve billion, seven hundred twenty million, five hundred eighteen thousand, seven hundred sixty-seven".