2163643465550 has 24 divisors (see below), whose sum is σ = 4599287824656. Its totient is φ = 741820616640.

The previous prime is 2163643465547. The next prime is 2163643465553. The reversal of 2163643465550 is 555643463612.

It is an interprime number because it is at equal distance from previous prime (2163643465547) and next prime (2163643465553).

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163643465553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3090918887 + ... + 3090919586.

It is an arithmetic number, because the mean of its divisors is an integer number (191636992694).

Almost surely, 2^{2163643465550} is an apocalyptic number.

2163643465550 is an abundant number, since it is smaller than the sum of its proper divisors (2435644359106).

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

2163643465550 is a wasteful number, since it uses less digits than its factorization.

2163643465550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6181838492 (or 6181838487 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 50.

The spelling of 2163643465550 in words is "two trillion, one hundred sixty-three billion, six hundred forty-three million, four hundred sixty-five thousand, five hundred fifty".