212702411691 has 72 divisors (see below), whose sum is σ = 391238396640. Its totient is φ = 108980847360.

The previous prime is 212702411681. The next prime is 212702411737. The reversal of 212702411691 is 196114207212.

212702411691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212702411691 - 2¹⁵ = 212702378923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212702411681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 365365 + ... + 747593.

It is an arithmetic number, because the mean of its divisors is an integer number (5433866620).

Almost surely, 2^212702411691 is an apocalyptic number.

212702411691 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

212702411691 is a deficient number, since it is larger than the sum of its proper divisors (178535984949).

212702411691 is a wasteful number, since it uses less digits than its factorization.

212702411691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382337 (or 382323 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The spelling of 212702411691 in words is "two hundred twelve billion, seven hundred two million, four hundred eleven thousand, six hundred ninety-one".