2165354352420 has 96 divisors (see below), whose sum is σ = 6929712518400. Its totient is φ = 494896809984.

The previous prime is 2165354352401. The next prime is 2165354352437. The reversal of 2165354352420 is 242534535612.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4969096 + ... + 5387264.

It is an arithmetic number, because the mean of its divisors is an integer number (72184505400).

Almost surely, 2^{2165354352420} is an apocalyptic number.

2165354352420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2165354352420 is an abundant number, since it is smaller than the sum of its proper divisors (4764358165980).

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

2165354352420 is a wasteful number, since it uses less digits than its factorization.

2165354352420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430517 (or 430515 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 42.

The spelling of 2165354352420 in words is "two trillion, one hundred sixty-five billion, three hundred fifty-four million, three hundred fifty-two thousand, four hundred twenty".