75520011011 has 4 divisors (see below), whose sum is σ = 75530777400. Its totient is φ = 75509244624.

The previous prime is 75520011001. The next prime is 75520011067. The reversal of 75520011011 is 11011002557.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 75520011011 - 2¹⁸ = 75519748867 is a prime.

It is a super-2 number, since 2×75520011011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75520011001) 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 3 ways as a sum of consecutive naturals, for example, 5372666 + ... + 5386703.

It is an arithmetic number, because the mean of its divisors is an integer number (18882694350).

Almost surely, 2^75520011011 is an apocalyptic number.

75520011011 is a deficient number, since it is larger than the sum of its proper divisors (10766389).

75520011011 is a wasteful number, since it uses less digits than its factorization.

75520011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10766388.

The product of its (nonzero) digits is 350, while the sum is 23.

Adding to 75520011011 its reverse (11011002557), we get a palindrome (86531013568).

The spelling of 75520011011 in words is "seventy-five billion, five hundred twenty million, eleven thousand, eleven".