201621460153 has 4 divisors (see below), whose sum is σ = 201624916608. Its totient is φ = 201618003700.

The previous prime is 201621460127. The next prime is 201621460171. The reversal of 201621460153 is 351064126102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201621460153 - 2²⁹ = 201084589241 is a prime.

It is a super-3 number, since 3×201621460153³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201621460123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1639201 + ... + 1757902.

It is an arithmetic number, because the mean of its divisors is an integer number (50406229152).

Almost surely, 2^201621460153 is an apocalyptic number.

It is an amenable number.

201621460153 is a deficient number, since it is larger than the sum of its proper divisors (3456455).

201621460153 is an equidigital number, since it uses as much as digits as its factorization.

201621460153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3456454.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 201621460153 its reverse (351064126102), we get a palindrome (552685586255).

The spelling of 201621460153 in words is "two hundred one billion, six hundred twenty-one million, four hundred sixty thousand, one hundred fifty-three".