53712682981 has 4 divisors (see below), whose sum is σ = 53713703052. Its totient is φ = 53711662912.

The previous prime is 53712682973. The next prime is 53712683027. The reversal of 53712682981 is 18928621735.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 53705745025 + 6937956 = 231745^2 + 2634^2 .

It is a cyclic number.

It is not a de Polignac number, because 53712682981 - 2³ = 53712682973 is a prime.

It is a super-2 number, since 2×53712682981² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53712682381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426490 + ... + 537883.

It is an arithmetic number, because the mean of its divisors is an integer number (13428425763).

Almost surely, 2^53712682981 is an apocalyptic number.

It is an amenable number.

53712682981 is a deficient number, since it is larger than the sum of its proper divisors (1020071).

53712682981 is an equidigital number, since it uses as much as digits as its factorization.

53712682981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020070.

The product of its digits is 1451520, while the sum is 52.

The spelling of 53712682981 in words is "fifty-three billion, seven hundred twelve million, six hundred eighty-two thousand, nine hundred eighty-one".