20315655753 has 4 divisors (see below), whose sum is σ = 27087541008. Its totient is φ = 13543770500.

The previous prime is 20315655743. The next prime is 20315655761. The reversal of 20315655753 is 35755651302.

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 20315655753 - 2⁸ = 20315655497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20315655743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3385942623 + ... + 3385942628.

It is an arithmetic number, because the mean of its divisors is an integer number (6771885252).

Almost surely, 2^20315655753 is an apocalyptic number.

It is an amenable number.

20315655753 is a deficient number, since it is larger than the sum of its proper divisors (6771885255).

20315655753 is an equidigital number, since it uses as much as digits as its factorization.

20315655753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6771885254.

The product of its (nonzero) digits is 472500, while the sum is 42.

The spelling of 20315655753 in words is "twenty billion, three hundred fifteen million, six hundred fifty-five thousand, seven hundred fifty-three".