123525806148 has 36 divisors (see below), whose sum is σ = 312258338028. Its totient is φ = 41173613760.

The previous prime is 123525806119. The next prime is 123525806149. The reversal of 123525806148 is 841608525321.

123525806148 is a `hidden beast` number, since 1 + 2 + 3 + 5 + 2 + 580 + 61 + 4 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 253191744 + 123272614404 = 15912^2 + 351102^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (123525806149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1119958 + ... + 1225298.

It is an arithmetic number, because the mean of its divisors is an integer number (8673842723).

Almost surely, 2^123525806148 is an apocalyptic number.

123525806148 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

123525806148 is an abundant number, since it is smaller than the sum of its proper divisors (188732531880).

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

123525806148 is a wasteful number, since it uses less digits than its factorization.

123525806148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137924 (or 137919 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The spelling of 123525806148 in words is "one hundred twenty-three billion, five hundred twenty-five million, eight hundred six thousand, one hundred forty-eight".