6624733661545 has 16 divisors (see below), whose sum is σ = 8417497511808. Its totient is φ = 4987922840320.

The previous prime is 6624733661543. The next prime is 6624733661561. The reversal of 6624733661545 is 5451663374266.

It is not a de Polignac number, because 6624733661545 - 2¹ = 6624733661543 is a prime.

It is a super-2 number, since 2×6624733661545² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6624733661545.

It is not an unprimeable number, because it can be changed into a prime (6624733661543) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3038730 + ... + 4741660.

It is an arithmetic number, because the mean of its divisors is an integer number (526093594488).

Almost surely, 2^{6624733661545} is an apocalyptic number.

It is an amenable number.

6624733661545 is a deficient number, since it is larger than the sum of its proper divisors (1792763850263).

6624733661545 is a wasteful number, since it uses less digits than its factorization.

6624733661545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748720.

The product of its digits is 65318400, while the sum is 58.

The spelling of 6624733661545 in words is "six trillion, six hundred twenty-four billion, seven hundred thirty-three million, six hundred sixty-one thousand, five hundred forty-five".