123571323960 has 256 divisors, whose sum is σ = 434582184960. Its totient is φ = 27520819200.

The previous prime is 123571323959. The next prime is 123571323961. The reversal of 123571323960 is 69323175321.

It is an interprime number because it is at equal distance from previous prime (123571323959) and next prime (123571323961).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123571323961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15636010 + ... + 15643910.

It is an arithmetic number, because the mean of its divisors is an integer number (1697586660).

Almost surely, 2^123571323960 is an apocalyptic number.

123571323960 is a gapful number since it is divisible by the number (10) 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 123571323960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217291092480).

123571323960 is an abundant number, since it is smaller than the sum of its proper divisors (311010861000).

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

123571323960 is a wasteful number, since it uses less digits than its factorization.

123571323960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8398 (or 8394 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 42.

The spelling of 123571323960 in words is "one hundred twenty-three billion, five hundred seventy-one million, three hundred twenty-three thousand, nine hundred sixty".