53440547925691 has 8 divisors (see below), whose sum is σ = 55790511915600. Its totient is φ = 51124396367520.

The previous prime is 53440547925617. The next prime is 53440547925731. The reversal of 53440547925691 is 19652974504435.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53440547925691 - 2¹⁹ = 53440547401403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53440547925091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8453104705 + ... + 8453111026.

It is an arithmetic number, because the mean of its divisors is an integer number (6973813989450).

Almost surely, 2^{53440547925691} is an apocalyptic number.

53440547925691 is a deficient number, since it is larger than the sum of its proper divisors (2349963989909).

53440547925691 is a wasteful number, since it uses less digits than its factorization.

53440547925691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16906215869.

The product of its (nonzero) digits is 163296000, while the sum is 64.

The spelling of 53440547925691 in words is "fifty-three trillion, four hundred forty billion, five hundred forty-seven million, nine hundred twenty-five thousand, six hundred ninety-one".