53155551611 has 4 divisors (see below), whose sum is σ = 53904221424. Its totient is φ = 52406881800.

The previous prime is 53155551607. The next prime is 53155551667. The reversal of 53155551611 is 11615555135.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53155551611 - 2² = 53155551607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53155551311) 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, 374334800 + ... + 374334941.

It is an arithmetic number, because the mean of its divisors is an integer number (13476055356).

Almost surely, 2^53155551611 is an apocalyptic number.

53155551611 is a deficient number, since it is larger than the sum of its proper divisors (748669813).

53155551611 is an equidigital number, since it uses as much as digits as its factorization.

53155551611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748669812.

The product of its digits is 56250, while the sum is 38.

The spelling of 53155551611 in words is "fifty-three billion, one hundred fifty-five million, five hundred fifty-one thousand, six hundred eleven".