320121451452511 has 4 divisors (see below), whose sum is σ = 336969948897400. Its totient is φ = 303272954007624.

The previous prime is 320121451452479. The next prime is 320121451452527. The reversal of 320121451452511 is 115254154121023.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320121451452511 - 2⁵ = 320121451452479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320121451452581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8424248722416 + ... + 8424248722453.

It is an arithmetic number, because the mean of its divisors is an integer number (84242487224350).

Almost surely, 2^{320121451452511} is an apocalyptic number.

320121451452511 is a deficient number, since it is larger than the sum of its proper divisors (16848497444889).

320121451452511 is a wasteful number, since it uses less digits than its factorization.

320121451452511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16848497444888.

The product of its (nonzero) digits is 48000, while the sum is 37.

The spelling of 320121451452511 in words is "three hundred twenty trillion, one hundred twenty-one billion, four hundred fifty-one million, four hundred fifty-two thousand, five hundred eleven".