212787525340 has 48 divisors (see below), whose sum is σ = 481666493952. Its totient is φ = 78495975936.

The previous prime is 212787525323. The next prime is 212787525451. The reversal of 212787525340 is 43525787212.

It is a super-2 number, since 2×212787525340² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 87804 + ... + 658243.

It is an arithmetic number, because the mean of its divisors is an integer number (10034718624).

Almost surely, 2^212787525340 is an apocalyptic number.

212787525340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212787525340 is an abundant number, since it is smaller than the sum of its proper divisors (268878968612).

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

212787525340 is a wasteful number, since it uses less digits than its factorization.

212787525340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747166 (or 747164 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 46.

The spelling of 212787525340 in words is "two hundred twelve billion, seven hundred eighty-seven million, five hundred twenty-five thousand, three hundred forty".