212795752440 has 32 divisors (see below), whose sum is σ = 638387257680. Its totient is φ = 56745533952.

The previous prime is 212795752427. The next prime is 212795752453. The reversal of 212795752440 is 44257597212.

It is an interprime number because it is at equal distance from previous prime (212795752427) and next prime (212795752453).

It is a self number, because there is not a number n which added to its sum of digits gives 212795752440.

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, 886648849 + ... + 886649088.

Almost surely, 2^212795752440 is an apocalyptic number.

212795752440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212795752440 is an abundant number, since it is smaller than the sum of its proper divisors (425591505240).

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

212795752440 is a wasteful number, since it uses less digits than its factorization.

212795752440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773297951 (or 1773297947 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 212795752440 in words is "two hundred twelve billion, seven hundred ninety-five million, seven hundred fifty-two thousand, four hundred forty".