60687217821 has 16 divisors (see below), whose sum is σ = 82817563136. Its totient is φ = 39507952176.

The previous prime is 60687217813. The next prime is 60687217861. The reversal of 60687217821 is 12871278606.

It is not a de Polignac number, because 60687217821 - 2³ = 60687217813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60687217861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517386 + ... + 623748.

It is an arithmetic number, because the mean of its divisors is an integer number (5176097696).

Almost surely, 2^60687217821 is an apocalyptic number.

It is an amenable number.

60687217821 is a deficient number, since it is larger than the sum of its proper divisors (22130345315).

60687217821 is a wasteful number, since it uses less digits than its factorization.

60687217821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110832.

The product of its (nonzero) digits is 451584, while the sum is 48.

The spelling of 60687217821 in words is "sixty billion, six hundred eighty-seven million, two hundred seventeen thousand, eight hundred twenty-one".