212346547440 has 80 divisors (see below), whose sum is σ = 658386530208. Its totient is φ = 56616091648.

The previous prime is 212346547433. The next prime is 212346547447. The reversal of 212346547440 is 44745643212.

It is a happy number.

212346547440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212346547433) and next prime (212346547447).

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 212346547392 and 212346547401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212346547447) 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 15 ways as a sum of consecutive naturals, for example, 1394752 + ... + 1539488.

Almost surely, 2^212346547440 is an apocalyptic number.

212346547440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212346547440 is an abundant number, since it is smaller than the sum of its proper divisors (446039982768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212346547440 is a wasteful number, since it uses less digits than its factorization.

212346547440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150866 (or 150860 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 42.

The spelling of 212346547440 in words is "two hundred twelve billion, three hundred forty-six million, five hundred forty-seven thousand, four hundred forty".