1320515161451 has 8 divisors (see below), whose sum is σ = 1338859238784. Its totient is φ = 1302177971520.

The previous prime is 1320515161447. The next prime is 1320515161477. The reversal of 1320515161451 is 1541615150231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1320515161451 - 2² = 1320515161447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320515161151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1335131 + ... + 2103236.

It is an arithmetic number, because the mean of its divisors is an integer number (167357404848).

Almost surely, 2^{1320515161451} is an apocalyptic number.

1320515161451 is a deficient number, since it is larger than the sum of its proper divisors (18344077333).

1320515161451 is an equidigital number, since it uses as much as digits as its factorization.

1320515161451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3443701.

The product of its (nonzero) digits is 18000, while the sum is 35.

The spelling of 1320515161451 in words is "one trillion, three hundred twenty billion, five hundred fifteen million, one hundred sixty-one thousand, four hundred fifty-one".