73561752133 has 16 divisors (see below), whose sum is σ = 74970380800. Its totient is φ = 72162802800.

The previous prime is 73561752083. The next prime is 73561752139. The reversal of 73561752133 is 33125716537.

It is a cyclic number.

It is not a de Polignac number, because 73561752133 - 2²¹ = 73559654981 is a prime.

It is a super-2 number, since 2×73561752133² (a number of 23 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 73561752133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73561752139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31024438 + ... + 31026808.

It is an arithmetic number, because the mean of its divisors is an integer number (4685648800).

Almost surely, 2^73561752133 is an apocalyptic number.

It is an amenable number.

73561752133 is a deficient number, since it is larger than the sum of its proper divisors (1408628667).

73561752133 is a wasteful number, since it uses less digits than its factorization.

73561752133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4168.

The product of its digits is 396900, while the sum is 43.

The spelling of 73561752133 in words is "seventy-three billion, five hundred sixty-one million, seven hundred fifty-two thousand, one hundred thirty-three".