216595420940 has 12 divisors (see below), whose sum is σ = 454850384016. Its totient is φ = 86638168368.

The previous prime is 216595420933. The next prime is 216595420949. The reversal of 216595420940 is 49024595612.

216595420940 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (216595420949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5414885504 + ... + 5414885543.

It is an arithmetic number, because the mean of its divisors is an integer number (37904198668).

Almost surely, 2^216595420940 is an apocalyptic number.

216595420940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216595420940 is an abundant number, since it is smaller than the sum of its proper divisors (238254963076).

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

216595420940 is a wasteful number, since it uses less digits than its factorization.

216595420940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10829771056 (or 10829771054 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 216595420940 in words is "two hundred sixteen billion, five hundred ninety-five million, four hundred twenty thousand, nine hundred forty".