21150153435 has 16 divisors (see below), whose sum is σ = 34316870400. Its totient is φ = 11121206880.

The previous prime is 21150153371. The next prime is 21150153439. The reversal of 21150153435 is 53435105112.

It is not a de Polignac number, because 21150153435 - 2⁶ = 21150153371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21150153439) 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, 9928585 + ... + 9930714.

It is an arithmetic number, because the mean of its divisors is an integer number (2144804400).

Almost surely, 2^21150153435 is an apocalyptic number.

21150153435 is a deficient number, since it is larger than the sum of its proper divisors (13166716965).

21150153435 is a wasteful number, since it uses less digits than its factorization.

21150153435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19859378.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 21150153435 its reverse (53435105112), we get a palindrome (74585258547).

The spelling of 21150153435 in words is "twenty-one billion, one hundred fifty million, one hundred fifty-three thousand, four hundred thirty-five".