123537045630 has 128 divisors (see below), whose sum is σ = 317420651520. Its totient is φ = 30680985600.

The previous prime is 123537045601. The next prime is 123537045689. The reversal of 123537045630 is 36540735321.

It is a super-2 number, since 2×123537045630² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8341392 + ... + 8356188.

It is an arithmetic number, because the mean of its divisors is an integer number (2479848840).

Almost surely, 2^123537045630 is an apocalyptic number.

123537045630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123537045630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158710325760).

123537045630 is an abundant number, since it is smaller than the sum of its proper divisors (193883605890).

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

123537045630 is a wasteful number, since it uses less digits than its factorization.

123537045630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15074.

The product of its (nonzero) digits is 226800, while the sum is 39.

The spelling of 123537045630 in words is "one hundred twenty-three billion, five hundred thirty-seven million, forty-five thousand, six hundred thirty".