153553475421 has 24 divisors (see below), whose sum is σ = 222348877920. Its totient is φ = 102115620000.

The previous prime is 153553475419. The next prime is 153553475431. The reversal of 153553475421 is 124574355351.

153553475421 is a `hidden beast` number, since 1 + 5 + 3 + 5 + 534 + 75 + 42 + 1 = 666.

It is not a de Polignac number, because 153553475421 - 2¹ = 153553475419 is a prime.

It is a super-2 number, since 2×153553475421² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153553475431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10304386 + ... + 10319276.

It is an arithmetic number, because the mean of its divisors is an integer number (9264536580).

Almost surely, 2^153553475421 is an apocalyptic number.

It is an amenable number.

153553475421 is a deficient number, since it is larger than the sum of its proper divisors (68795402499).

153553475421 is a wasteful number, since it uses less digits than its factorization.

153553475421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17657 (or 17654 counting only the distinct ones).

The product of its digits is 1260000, while the sum is 45.

The spelling of 153553475421 in words is "one hundred fifty-three billion, five hundred fifty-three million, four hundred seventy-five thousand, four hundred twenty-one".