215562143420 has 24 divisors (see below), whose sum is σ = 487502078784. Its totient is φ = 79592175936.

The previous prime is 215562143371. The next prime is 215562143437. The reversal of 215562143420 is 24341265512.

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, 414542324 + ... + 414542843.

It is an arithmetic number, because the mean of its divisors is an integer number (20312586616).

Almost surely, 2^215562143420 is an apocalyptic number.

215562143420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215562143420 is an abundant number, since it is smaller than the sum of its proper divisors (271939935364).

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

215562143420 is a wasteful number, since it uses less digits than its factorization.

215562143420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829085189 (or 829085187 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 215562143420 in words is "two hundred fifteen billion, five hundred sixty-two million, one hundred forty-three thousand, four hundred twenty".