87947068953 has 4 divisors (see below), whose sum is σ = 117262758608. Its totient is φ = 58631379300.

The previous prime is 87947068903. The next prime is 87947068967. The reversal of 87947068953 is 35986074978.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 87947068953 - 2³² = 83652101657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87947068903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14657844823 + ... + 14657844828.

It is an arithmetic number, because the mean of its divisors is an integer number (29315689652).

Almost surely, 2^87947068953 is an apocalyptic number.

It is an amenable number.

87947068953 is a deficient number, since it is larger than the sum of its proper divisors (29315689655).

87947068953 is a wasteful number, since it uses less digits than its factorization.

87947068953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29315689654.

The product of its (nonzero) digits is 91445760, while the sum is 66.

The spelling of 87947068953 in words is "eighty-seven billion, nine hundred forty-seven million, sixty-eight thousand, nine hundred fifty-three".