53102638081 has 4 divisors (see below), whose sum is σ = 56226322692. Its totient is φ = 49978953472.

The previous prime is 53102638063. The next prime is 53102638093. The reversal of 53102638081 is 18083620135.

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 26342913025 + 26759725056 = 162305^2 + 163584^2 .

It is a cyclic number.

It is not a de Polignac number, because 53102638081 - 2⁵ = 53102638049 is a prime.

It is a super-2 number, since 2×53102638081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53102638081.

It is not an unprimeable number, because it can be changed into a prime (53102630081) 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, 1561842280 + ... + 1561842313.

It is an arithmetic number, because the mean of its divisors is an integer number (14056580673).

Almost surely, 2^53102638081 is an apocalyptic number.

It is an amenable number.

53102638081 is a deficient number, since it is larger than the sum of its proper divisors (3123684611).

53102638081 is a wasteful number, since it uses less digits than its factorization.

53102638081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3123684610.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 53102638081 in words is "fifty-three billion, one hundred two million, six hundred thirty-eight thousand, eighty-one".