53190991803 has 4 divisors (see below), whose sum is σ = 70921322408. Its totient is φ = 35460661200.

The previous prime is 53190991793. The next prime is 53190991849. The reversal of 53190991803 is 30819909135.

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

It is not a de Polignac number, because 53190991803 - 2¹⁷ = 53190860731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53190911803) 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, 8865165298 + ... + 8865165303.

It is an arithmetic number, because the mean of its divisors is an integer number (17730330602).

Almost surely, 2^53190991803 is an apocalyptic number.

53190991803 is a deficient number, since it is larger than the sum of its proper divisors (17730330605).

53190991803 is a wasteful number, since it uses less digits than its factorization.

53190991803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17730330604.

The product of its (nonzero) digits is 262440, while the sum is 48.

The spelling of 53190991803 in words is "fifty-three billion, one hundred ninety million, nine hundred ninety-one thousand, eight hundred three".