53691497017 has 4 divisors (see below), whose sum is σ = 55142618596. Its totient is φ = 52240375440.

The previous prime is 53691496979. The next prime is 53691497021. The reversal of 53691497017 is 71079419635.

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 28703475241 + 24988021776 = 169421^2 + 158076^2 .

It is a cyclic number.

It is not a de Polignac number, because 53691497017 - 2¹⁵ = 53691464249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53691497047) 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, 725560734 + ... + 725560807.

It is an arithmetic number, because the mean of its divisors is an integer number (13785654649).

Almost surely, 2^53691497017 is an apocalyptic number.

It is an amenable number.

53691497017 is a deficient number, since it is larger than the sum of its proper divisors (1451121579).

53691497017 is a wasteful number, since it uses less digits than its factorization.

53691497017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451121578.

The product of its (nonzero) digits is 1428840, while the sum is 52.

The spelling of 53691497017 in words is "fifty-three billion, six hundred ninety-one million, four hundred ninety-seven thousand, seventeen".