87325569081 has 27 divisors (see below), whose sum is σ = 127241330671. Its totient is φ = 57711725664.

The previous prime is 87325569053. The next prime is 87325569119. The reversal of 87325569081 is 18096552378.

The square root of 87325569081 is 295509.

It is a perfect power (a square), and thus also a powerful number.

87325569081 is a `hidden beast` number, since 8 + 7 + 3 + 2 + 556 + 9 + 0 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 51295455225 + 36030113856 = 226485^2 + 189816^2 .

It is not a de Polignac number, because 87325569081 - 2¹⁵ = 87325536313 is a prime.

It is a super-2 number, since 2×87325569081² (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 (87325569481) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 121453840 + ... + 121454558.

Almost surely, 2^87325569081 is an apocalyptic number.

87325569081 is the 295509-th square number.

87325569081 is the 147755-th centered octagonal number.

It is an amenable number.

87325569081 is a deficient number, since it is larger than the sum of its proper divisors (39915761590).

87325569081 is an frugal number, since it uses more digits than its factorization.

87325569081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718 (or 859 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The spelling of 87325569081 in words is "eighty-seven billion, three hundred twenty-five million, five hundred sixty-nine thousand, eighty-one".