120123551610 has 320 divisors, whose sum is σ = 348921175680. Its totient is φ = 29561241600.

The previous prime is 120123551593. The next prime is 120123551621. The reversal of 120123551610 is 16155321021.

120123551610 is a `hidden beast` number, since 1 + 2 + 0 + 12 + 35 + 5 + 1 + 610 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 100019010 + ... + 100020210.

It is an arithmetic number, because the mean of its divisors is an integer number (1090378674).

Almost surely, 2^120123551610 is an apocalyptic number.

120123551610 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 120123551610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174460587840).

120123551610 is an abundant number, since it is smaller than the sum of its proper divisors (228797624070).

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

120123551610 is a wasteful number, since it uses less digits than its factorization.

120123551610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403 (or 1394 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 120123551610 its reverse (16155321021), we get a palindrome (136278872631).

The spelling of 120123551610 in words is "one hundred twenty billion, one hundred twenty-three million, five hundred fifty-one thousand, six hundred ten".