320503610997 has 16 divisors (see below), whose sum is σ = 475394345280. Its totient is φ = 213410692656.

The previous prime is 320503610971. The next prime is 320503611011. The reversal of 320503610997 is 799016305023.

320503610997 is a `hidden beast` number, since 3 + 20 + 5 + 0 + 3 + 610 + 9 + 9 + 7 = 666.

It is not a de Polignac number, because 320503610997 - 2²² = 320499416693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320503610797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7154518 + ... + 7199175.

It is an arithmetic number, because the mean of its divisors is an integer number (29712146580).

Almost surely, 2^320503610997 is an apocalyptic number.

It is an amenable number.

320503610997 is a deficient number, since it is larger than the sum of its proper divisors (154890734283).

320503610997 is a wasteful number, since it uses less digits than its factorization.

320503610997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14354529 (or 14354523 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The spelling of 320503610997 in words is "three hundred twenty billion, five hundred three million, six hundred ten thousand, nine hundred ninety-seven".