320656549454638 has 32 divisors (see below), whose sum is σ = 495185317673760. Its totient is φ = 155668582080000.

The previous prime is 320656549454627. The next prime is 320656549454641. The reversal of 320656549454638 is 836454945656023.

It is a super-2 number, since 2×320656549454638² (a number of 30 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, 18043248 + ... + 31094563.

It is an arithmetic number, because the mean of its divisors is an integer number (15474541177305).

Almost surely, 2^{320656549454638} is an apocalyptic number.

320656549454638 is a deficient number, since it is larger than the sum of its proper divisors (174528768219122).

320656549454638 is a wasteful number, since it uses less digits than its factorization.

320656549454638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49138564.

The product of its (nonzero) digits is 2239488000, while the sum is 70.

The spelling of 320656549454638 in words is "three hundred twenty trillion, six hundred fifty-six billion, five hundred forty-nine million, four hundred fifty-four thousand, six hundred thirty-eight".