691250448096 has 192 divisors, whose sum is σ = 2172742367040. Its totient is φ = 212544829440.

The previous prime is 691250448059. The next prime is 691250448101. The reversal of 691250448096 is 690844052196.

691250448096 is a `hidden beast` number, since 6 + 9 + 1 + 2 + 504 + 48 + 0 + 96 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 16748766 + ... + 16789986.

It is an arithmetic number, because the mean of its divisors is an integer number (11316366495).

Almost surely, 2^691250448096 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 691250448096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1086371183520).

691250448096 is an abundant number, since it is smaller than the sum of its proper divisors (1481491918944).

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

691250448096 is a wasteful number, since it uses less digits than its factorization.

691250448096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42746 (or 42732 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 691250448096 in words is "six hundred ninety-one billion, two hundred fifty million, four hundred forty-eight thousand, ninety-six".