153985405500 has 72 divisors (see below), whose sum is σ = 485772640080. Its totient is φ = 41062773600.

The previous prime is 153985405489. The next prime is 153985405531. The reversal of 153985405500 is 5504589351.

153985405500 is a `hidden beast` number, since 1 + 5 + 3 + 98 + 5 + 4 + 0 + 550 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17104990 + ... + 17113989.

Almost surely, 2^153985405500 is an apocalyptic number.

153985405500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

153985405500 is an abundant number, since it is smaller than the sum of its proper divisors (331787234580).

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

153985405500 is a wasteful number, since it uses less digits than its factorization.

153985405500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34219004 (or 34218989 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 45.

The spelling of 153985405500 in words is "one hundred fifty-three billion, nine hundred eighty-five million, four hundred five thousand, five hundred".