123355306620 has 240 divisors, whose sum is σ = 476271542208. Its totient is φ = 26026583040.

The previous prime is 123355306567. The next prime is 123355306663. The reversal of 123355306620 is 26603553321.

123355306620 is a `hidden beast` number, since 1 + 23 + 3 + 5 + 5 + 3 + 0 + 6 + 620 = 666.

123355306620 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 270961 + ... + 565800.

Almost surely, 2^123355306620 is an apocalyptic number.

123355306620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123355306620 is an abundant number, since it is smaller than the sum of its proper divisors (352916235588).

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

123355306620 is a wasteful number, since it uses less digits than its factorization.

123355306620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836802 (or 836791 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

Adding to 123355306620 its reverse (26603553321), we get a palindrome (149958859941).

The spelling of 123355306620 in words is "one hundred twenty-three billion, three hundred fifty-five million, three hundred six thousand, six hundred twenty".