52781667919028 has 48 divisors (see below), whose sum is σ = 94323233788560. Its totient is φ = 25837527158784.

The previous prime is 52781667918977. The next prime is 52781667919067. The reversal of 52781667919028 is 82091976618725.

It can be written as a sum of positive squares in 8 ways, for example, as 4048675185424 + 48732992733604 = 2012132^2 + 6980902^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 716394800 + ... + 716468472.

It is an arithmetic number, because the mean of its divisors is an integer number (1965067370595).

Almost surely, 2^{52781667919028} is an apocalyptic number.

It is an amenable number.

52781667919028 is a deficient number, since it is larger than the sum of its proper divisors (41541565869532).

52781667919028 is a wasteful number, since it uses less digits than its factorization.

52781667919028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91796 (or 91794 counting only the distinct ones).

The product of its (nonzero) digits is 182891520, while the sum is 71.

The spelling of 52781667919028 in words is "fifty-two trillion, seven hundred eighty-one billion, six hundred sixty-seven million, nine hundred nineteen thousand, twenty-eight".