691444469014 has 32 divisors (see below), whose sum is σ = 1123864580160. Its totient is φ = 317153044992.

The previous prime is 691444468973. The next prime is 691444469041. The reversal of 691444469014 is 410964444196.

691444469014 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×691444469014² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26425362 + ... + 26451514.

It is an arithmetic number, because the mean of its divisors is an integer number (35120768130).

Almost surely, 2^691444469014 is an apocalyptic number.

691444469014 is a deficient number, since it is larger than the sum of its proper divisors (432420111146).

691444469014 is a wasteful number, since it uses less digits than its factorization.

691444469014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32424.

The product of its (nonzero) digits is 2985984, while the sum is 52.

The spelling of 691444469014 in words is "six hundred ninety-one billion, four hundred forty-four million, four hundred sixty-nine thousand, fourteen".