87501645073 has 16 divisors (see below), whose sum is σ = 91559577600. Its totient is φ = 83623219680.

The previous prime is 87501645031. The next prime is 87501645089. The reversal of 87501645073 is 37054610578.

It is a de Polignac number, because none of the positive numbers 2^k-87501645073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87501675073) 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, 17895213 + ... + 17900101.

It is an arithmetic number, because the mean of its divisors is an integer number (5722473600).

Almost surely, 2^87501645073 is an apocalyptic number.

It is an amenable number.

87501645073 is a deficient number, since it is larger than the sum of its proper divisors (4057932527).

87501645073 is an equidigital number, since it uses as much as digits as its factorization.

87501645073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6429 (or 6383 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 87501645073 in words is "eighty-seven billion, five hundred one million, six hundred forty-five thousand, seventy-three".