53251299566 has 4 divisors (see below), whose sum is σ = 79876949352. Its totient is φ = 26625649782.

The previous prime is 53251299559. The next prime is 53251299583. The reversal of 53251299566 is 66599215235.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 13312824890 + ... + 13312824893.

It is an arithmetic number, because the mean of its divisors is an integer number (19969237338).

Almost surely, 2^53251299566 is an apocalyptic number.

53251299566 is a deficient number, since it is larger than the sum of its proper divisors (26625649786).

53251299566 is a wasteful number, since it uses less digits than its factorization.

53251299566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26625649785.

The product of its digits is 4374000, while the sum is 53.

The spelling of 53251299566 in words is "fifty-three billion, two hundred fifty-one million, two hundred ninety-nine thousand, five hundred sixty-six".