53707121812 has 6 divisors (see below), whose sum is σ = 93987463178. Its totient is φ = 26853560904.

The previous prime is 53707121789. The next prime is 53707121857. The reversal of 53707121812 is 21812170735.

It can be written as a sum of positive squares in only one way, i.e., 39821798916 + 13885322896 = 199554^2 + 117836^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6713390223 + ... + 6713390230.

Almost surely, 2^53707121812 is an apocalyptic number.

It is an amenable number.

53707121812 is a deficient number, since it is larger than the sum of its proper divisors (40280341366).

53707121812 is a wasteful number, since it uses less digits than its factorization.

53707121812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13426780457 (or 13426780455 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 37.

The spelling of 53707121812 in words is "fifty-three billion, seven hundred seven million, one hundred twenty-one thousand, eight hundred twelve".