65534613531 has 8 divisors (see below), whose sum is σ = 88432249920. Its totient is φ = 43163359752.

The previous prime is 65534613523. The next prime is 65534613541. The reversal of 65534613531 is 13531643556.

It is a happy number.

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

It is not a de Polignac number, because 65534613531 - 2³ = 65534613523 is a prime.

It is a super-2 number, since 2×65534613531² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65534613541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131595361 + ... + 131595858.

It is an arithmetic number, because the mean of its divisors is an integer number (11054031240).

Almost surely, 2^65534613531 is an apocalyptic number.

65534613531 is a deficient number, since it is larger than the sum of its proper divisors (22897636389).

65534613531 is a wasteful number, since it uses less digits than its factorization.

65534613531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263191305.

The product of its digits is 486000, while the sum is 42.

The spelling of 65534613531 in words is "sixty-five billion, five hundred thirty-four million, six hundred thirteen thousand, five hundred thirty-one".