212646953540 has 24 divisors (see below), whose sum is σ = 510352688832. Its totient is φ = 72907526880.

The previous prime is 212646953503. The next prime is 212646953569. The reversal of 212646953540 is 45359646212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 759453266 + ... + 759453545.

It is an arithmetic number, because the mean of its divisors is an integer number (21264695368).

Almost surely, 2^212646953540 is an apocalyptic number.

212646953540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212646953540 is an abundant number, since it is smaller than the sum of its proper divisors (297705735292).

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

212646953540 is a wasteful number, since it uses less digits than its factorization.

212646953540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518906827 (or 1518906825 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 212646953540 in words is "two hundred twelve billion, six hundred forty-six million, nine hundred fifty-three thousand, five hundred forty".