23173387420500 has 1152 divisors, whose sum is σ = 85268671488000. Its totient is φ = 5255058124800.

The previous prime is 23173387420493. The next prime is 23173387420559. The reversal of 23173387420500 is 502478337132.

It is a happy number.

23173387420500 is a `hidden beast` number, since 2 + 3 + 1 + 73 + 3 + 8 + 74 + 2 + 0 + 500 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 14675988711 + ... + 14675990289.

It is an arithmetic number, because the mean of its divisors is an integer number (74017944000).

Almost surely, 2^{23173387420500} is an apocalyptic number.

23173387420500 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 23173387420500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42634335744000).

23173387420500 is an abundant number, since it is smaller than the sum of its proper divisors (62095284067500).

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

23173387420500 is a wasteful number, since it uses less digits than its factorization.

23173387420500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102 (or 2087 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The spelling of 23173387420500 in words is "twenty-three trillion, one hundred seventy-three billion, three hundred eighty-seven million, four hundred twenty thousand, five hundred".