87533428736 has 56 divisors (see below), whose sum is σ = 188522261004. Its totient is φ = 40399994880.

The previous prime is 87533428733. The next prime is 87533428747. The reversal of 87533428736 is 63782433578.

It can be written as a sum of positive squares in 2 ways, for example, as 85881819136 + 1651609600 = 293056^2 + 40640^2 .

It is a super-2 number, since 2×87533428736² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87533428733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304475 + ... + 517466.

Almost surely, 2^87533428736 is an apocalyptic number.

It is an amenable number.

87533428736 is an abundant number, since it is smaller than the sum of its proper divisors (100988832268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87533428736 is an equidigital number, since it uses as much as digits as its factorization.

87533428736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821980 (or 821956 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 56.

The spelling of 87533428736 in words is "eighty-seven billion, five hundred thirty-three million, four hundred twenty-eight thousand, seven hundred thirty-six".