653216660537 has 8 divisors (see below), whose sum is σ = 746582942016. Its totient is φ = 559862782992.

The previous prime is 653216660519. The next prime is 653216660563. The reversal of 653216660537 is 735066612356.

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 653216660537 - 2¹² = 653216656441 is a prime.

It is a super-2 number, since 2×653216660537² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (653216660507) 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, 2987858 + ... + 3199019.

It is an arithmetic number, because the mean of its divisors is an integer number (93322867752).

Almost surely, 2^653216660537 is an apocalyptic number.

It is an amenable number.

653216660537 is a deficient number, since it is larger than the sum of its proper divisors (93366281479).

653216660537 is a wasteful number, since it uses less digits than its factorization.

653216660537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6201967.

The product of its (nonzero) digits is 4082400, while the sum is 50.

The spelling of 653216660537 in words is "six hundred fifty-three billion, two hundred sixteen million, six hundred sixty thousand, five hundred thirty-seven".