53009164681 has 4 divisors (see below), whose sum is σ = 57828179664. Its totient is φ = 48190149700.

The previous prime is 53009164667. The next prime is 53009164697. The reversal of 53009164681 is 18646190035.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 53009164681 - 2¹⁵ = 53009131913 is a prime.

It is a super-4 number, since 4×53009164681⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53009164631) 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, 2409507475 + ... + 2409507496.

It is an arithmetic number, because the mean of its divisors is an integer number (14457044916).

Almost surely, 2^53009164681 is an apocalyptic number.

It is an amenable number.

53009164681 is a deficient number, since it is larger than the sum of its proper divisors (4819014983).

53009164681 is a wasteful number, since it uses less digits than its factorization.

53009164681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4819014982.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 53009164681 in words is "fifty-three billion, nine million, one hundred sixty-four thousand, six hundred eighty-one".