120331645653 has 4 divisors (see below), whose sum is σ = 160442194208. Its totient is φ = 80221097100.

The previous prime is 120331645627. The next prime is 120331645661. The reversal of 120331645653 is 356546133021.

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 not a de Polignac number, because 120331645653 - 2⁶ = 120331645589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120331645673) 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, 20055274273 + ... + 20055274278.

It is an arithmetic number, because the mean of its divisors is an integer number (40110548552).

Almost surely, 2^120331645653 is an apocalyptic number.

It is an amenable number.

120331645653 is a deficient number, since it is larger than the sum of its proper divisors (40110548555).

120331645653 is an equidigital number, since it uses as much as digits as its factorization.

120331645653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40110548554.

The product of its (nonzero) digits is 194400, while the sum is 39.

Adding to 120331645653 its reverse (356546133021), we get a palindrome (476877778674).

The spelling of 120331645653 in words is "one hundred twenty billion, three hundred thirty-one million, six hundred forty-five thousand, six hundred fifty-three".