123445525320 has 192 divisors, whose sum is σ = 445997260800. Its totient is φ = 29406343680.

The previous prime is 123445525283. The next prime is 123445525321. The reversal of 123445525320 is 23525544321.

123445525320 is a `hidden beast` number, since 1 + 2 + 34 + 4 + 552 + 53 + 20 = 666.

It is a super-2 number, since 2×123445525320² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (123445525321) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 280360 + ... + 570519.

It is an arithmetic number, because the mean of its divisors is an integer number (2322902400).

Almost surely, 2^123445525320 is an apocalyptic number.

123445525320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123445525320 is an abundant number, since it is smaller than the sum of its proper divisors (322551735480).

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

123445525320 is a wasteful number, since it uses less digits than its factorization.

123445525320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850940 (or 850933 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 123445525320 in words is "one hundred twenty-three billion, four hundred forty-five million, five hundred twenty-five thousand, three hundred twenty".