320640001052555 has 16 divisors (see below), whose sum is σ = 397645499483904. Its totient is φ = 247946403162240.

The previous prime is 320640001052491. The next prime is 320640001052587. The reversal of 320640001052555 is 555250100046023.

It is not a de Polignac number, because 320640001052555 - 2⁶ = 320640001052491 is a prime.

It is a Duffinian 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, 1212438224 + ... + 1212702653.

It is an arithmetic number, because the mean of its divisors is an integer number (24852843717744).

Almost surely, 2^{320640001052555} is an apocalyptic number.

320640001052555 is a deficient number, since it is larger than the sum of its proper divisors (77005498431349).

320640001052555 is a wasteful number, since it uses less digits than its factorization.

320640001052555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2425141766.

The product of its (nonzero) digits is 180000, while the sum is 38.

Adding to 320640001052555 its reverse (555250100046023), we get a palindrome (875890101098578).

The spelling of 320640001052555 in words is "three hundred twenty trillion, six hundred forty billion, one million, fifty-two thousand, five hundred fifty-five".