528172076061091 has 16 divisors (see below), whose sum is σ = 658697229831168. Its totient is φ = 411439544697600.

The previous prime is 528172076061089. The next prime is 528172076061103. The reversal of 528172076061091 is 190160670271825.

It is a cyclic number.

It is not a de Polignac number, because 528172076061091 - 2¹ = 528172076061089 is a prime.

It is a super-2 number, since 2×528172076061091² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (528172076061001) 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, 1025674030 + ... + 1026188851.

It is an arithmetic number, because the mean of its divisors is an integer number (41168576864448).

Almost surely, 2^{528172076061091} is an apocalyptic number.

528172076061091 is a deficient number, since it is larger than the sum of its proper divisors (130525153770077).

528172076061091 is a wasteful number, since it uses less digits than its factorization.

528172076061091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051866242.

The product of its (nonzero) digits is 2540160, while the sum is 55.

The spelling of 528172076061091 in words is "five hundred twenty-eight trillion, one hundred seventy-two billion, seventy-six million, sixty-one thousand, ninety-one".