212757810040 has 32 divisors (see below), whose sum is σ = 480151341360. Its totient is φ = 84846009600.

The previous prime is 212757810037. The next prime is 212757810073. The reversal of 212757810040 is 40018757212.

It is a congruent number.

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, 8021421 + ... + 8047900.

Almost surely, 2^212757810040 is an apocalyptic number.

212757810040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212757810040 is an abundant number, since it is smaller than the sum of its proper divisors (267393531320).

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

212757810040 is a wasteful number, since it uses less digits than its factorization.

212757810040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16069663 (or 16069659 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 37.

The spelling of 212757810040 in words is "two hundred twelve billion, seven hundred fifty-seven million, eight hundred ten thousand, forty".