2665623473500 has 96 divisors (see below), whose sum is σ = 6283153356480. Its totient is φ = 982094112000.

The previous prime is 2665623473437. The next prime is 2665623473521. The reversal of 2665623473500 is 53743265662.

It is a congruent number.

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, 2551711 + ... + 3441289.

It is an arithmetic number, because the mean of its divisors is an integer number (65449514130).

Almost surely, 2^{2665623473500} is an apocalyptic number.

2665623473500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2665623473500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3141576678240).

2665623473500 is an abundant number, since it is smaller than the sum of its proper divisors (3617529882980).

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

2665623473500 is a wasteful number, since it uses less digits than its factorization.

2665623473500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890072 (or 890060 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 49.

The spelling of 2665623473500 in words is "two trillion, six hundred sixty-five billion, six hundred twenty-three million, four hundred seventy-three thousand, five hundred".