123757601280 has 160 divisors (see below), whose sum is σ = 405288309888. Its totient is φ = 32197017600.

The previous prime is 123757601257. The next prime is 123757601281. The reversal of 123757601280 is 82106757321.

It is a tau number, because it is divible by the number of its divisors (160).

It is not an unprimeable number, because it can be changed into a prime (123757601281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118365 + ... + 511395.

Almost surely, 2^123757601280 is an apocalyptic number.

123757601280 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 123757601280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202644154944).

123757601280 is an abundant number, since it is smaller than the sum of its proper divisors (281530708608).

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

123757601280 is an equidigital number, since it uses as much as digits as its factorization.

123757601280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393098 (or 393082 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 123757601280 in words is "one hundred twenty-three billion, seven hundred fifty-seven million, six hundred one thousand, two hundred eighty".