212484138870 has 32 divisors (see below), whose sum is σ = 536802036480. Its totient is φ = 53680203360.

The previous prime is 212484138803. The next prime is 212484138887. The reversal of 212484138870 is 78831484212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186389026 + ... + 186390165.

It is an arithmetic number, because the mean of its divisors is an integer number (16775063640).

Almost surely, 2^212484138870 is an apocalyptic number.

212484138870 is an abundant number, since it is smaller than the sum of its proper divisors (324317897610).

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

212484138870 is a wasteful number, since it uses less digits than its factorization.

212484138870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372779220.

The product of its (nonzero) digits is 688128, while the sum is 48.

The spelling of 212484138870 in words is "two hundred twelve billion, four hundred eighty-four million, one hundred thirty-eight thousand, eight hundred seventy".