21436200153 has 16 divisors (see below), whose sum is σ = 31840266240. Its totient is φ = 14253480432.

The previous prime is 21436200151. The next prime is 21436200161. The reversal of 21436200153 is 35100263412.

21436200153 is a `hidden beast` number, since 21 + 4 + 3 + 620 + 0 + 15 + 3 = 666.

It is not a de Polignac number, because 21436200153 - 2¹ = 21436200151 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (21436200151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1026126 + ... + 1046807.

It is an arithmetic number, because the mean of its divisors is an integer number (1990016640).

Almost surely, 2^21436200153 is an apocalyptic number.

It is an amenable number.

21436200153 is a deficient number, since it is larger than the sum of its proper divisors (10404066087).

21436200153 is a wasteful number, since it uses less digits than its factorization.

21436200153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073325 (or 2073319 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 21436200153 its reverse (35100263412), we get a palindrome (56536463565).

The spelling of 21436200153 in words is "twenty-one billion, four hundred thirty-six million, two hundred thousand, one hundred fifty-three".