691325729476 has 12 divisors (see below), whose sum is σ = 1262420897472. Its totient is φ = 330634044488.

The previous prime is 691325729459. The next prime is 691325729489. The reversal of 691325729476 is 674927523196.

It is a happy number.

691325729476 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3757204960 + ... + 3757205143.

It is an arithmetic number, because the mean of its divisors is an integer number (105201741456).

Almost surely, 2^691325729476 is an apocalyptic number.

It is an amenable number.

691325729476 is a deficient number, since it is larger than the sum of its proper divisors (571095167996).

691325729476 is a wasteful number, since it uses less digits than its factorization.

691325729476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7514410130 (or 7514410128 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 61.

The spelling of 691325729476 in words is "six hundred ninety-one billion, three hundred twenty-five million, seven hundred twenty-nine thousand, four hundred seventy-six".