10687921473 has 4 divisors (see below), whose sum is σ = 14250561968. Its totient is φ = 7125280980.

The previous prime is 10687921457. The next prime is 10687921499. The reversal of 10687921473 is 37412978601.

It is a happy number.

10687921473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10687921473 - 2⁴ = 10687921457 is a prime.

It is a super-2 number, since 2×10687921473² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10687921873) 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, 1781320243 + ... + 1781320248.

It is an arithmetic number, because the mean of its divisors is an integer number (3562640492).

Almost surely, 2^10687921473 is an apocalyptic number.

It is an amenable number.

10687921473 is a deficient number, since it is larger than the sum of its proper divisors (3562640495).

10687921473 is an equidigital number, since it uses as much as digits as its factorization.

10687921473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3562640494.

The product of its (nonzero) digits is 508032, while the sum is 48.

The spelling of 10687921473 in words is "ten billion, six hundred eighty-seven million, nine hundred twenty-one thousand, four hundred seventy-three".