53708372081 has 16 divisors (see below), whose sum is σ = 66585128064. Its totient is φ = 42184347264.

The previous prime is 53708372057. The next prime is 53708372089. The reversal of 53708372081 is 18027380735.

It is a cyclic number.

It is not a de Polignac number, because 53708372081 - 2²⁶ = 53641263217 is a prime.

It is a super-2 number, since 2×53708372081² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (53708372089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2141555 + ... + 2166488.

It is an arithmetic number, because the mean of its divisors is an integer number (4161570504).

Almost surely, 2^53708372081 is an apocalyptic number.

It is an amenable number.

53708372081 is a deficient number, since it is larger than the sum of its proper divisors (12876755983).

53708372081 is a wasteful number, since it uses less digits than its factorization.

53708372081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4308200.

The product of its (nonzero) digits is 282240, while the sum is 44.

The spelling of 53708372081 in words is "fifty-three billion, seven hundred eight million, three hundred seventy-two thousand, eighty-one".