31665052545 has 64 divisors (see below), whose sum is σ = 60523905024. Its totient is φ = 13822110720.

The previous prime is 31665052511. The next prime is 31665052571. The reversal of 31665052545 is 54525056613.

It is not a de Polignac number, because 31665052545 - 2¹² = 31665048449 is a prime.

It is a super-2 number, since 2×31665052545² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31665052497 and 31665052506.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1421040 + ... + 1443150.

It is an arithmetic number, because the mean of its divisors is an integer number (945686016).

Almost surely, 2^31665052545 is an apocalyptic number.

31665052545 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31665052545 is a deficient number, since it is larger than the sum of its proper divisors (28858852479).

31665052545 is a wasteful number, since it uses less digits than its factorization.

31665052545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22742.

The product of its (nonzero) digits is 540000, while the sum is 42.

The spelling of 31665052545 in words is "thirty-one billion, six hundred sixty-five million, fifty-two thousand, five hundred forty-five".