123455533100 has 36 divisors (see below), whose sum is σ = 268027694088. Its totient is φ = 49358400000.

The previous prime is 123455533051. The next prime is 123455533129. The reversal of 123455533100 is 1335554321.

It is a super-2 number, since 2×123455533100² (a number of 23 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 88526 + ... + 504725.

Almost surely, 2^123455533100 is an apocalyptic number.

123455533100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123455533100 is an abundant number, since it is smaller than the sum of its proper divisors (144572160988).

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

123455533100 is a wasteful number, since it uses less digits than its factorization.

123455533100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595346 (or 595339 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 32.

The spelling of 123455533100 in words is "one hundred twenty-three billion, four hundred fifty-five million, five hundred thirty-three thousand, one hundred".