691433233008 has 80 divisors (see below), whose sum is σ = 2042709186816. Its totient is φ = 197423170560.

The previous prime is 691433233003. The next prime is 691433233069. The reversal of 691433233008 is 800332334196.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (691433233003) 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, 157641 + ... + 1186472.

Almost surely, 2^691433233008 is an apocalyptic number.

It is an amenable number.

691433233008 is an abundant number, since it is smaller than the sum of its proper divisors (1351275953808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

691433233008 is a wasteful number, since it uses less digits than its factorization.

691433233008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345662 (or 1345656 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 42.

The spelling of 691433233008 in words is "six hundred ninety-one billion, four hundred thirty-three million, two hundred thirty-three thousand, eight".