2165245400652 has 24 divisors (see below), whose sum is σ = 5059636416576. Its totient is φ = 720691731408.

The previous prime is 2165245400629. The next prime is 2165245400657. The reversal of 2165245400652 is 2560045425612.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2165245400657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132083398 + ... + 132099789.

It is an arithmetic number, because the mean of its divisors is an integer number (210818184024).

Almost surely, 2^{2165245400652} is an apocalyptic number.

It is an amenable number.

2165245400652 is an abundant number, since it is smaller than the sum of its proper divisors (2894391015924).

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

2165245400652 is a wasteful number, since it uses less digits than its factorization.

2165245400652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264183877 (or 264183875 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 2165245400652 in words is "two trillion, one hundred sixty-five billion, two hundred forty-five million, four hundred thousand, six hundred fifty-two".