2651451603321 has 8 divisors (see below), whose sum is σ = 3538814714944. Its totient is φ = 1765861446960.

The previous prime is 2651451603313. The next prime is 2651451603329. The reversal of 2651451603321 is 1233061541562.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2651451603313) and next prime (2651451603329).

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

It is not a de Polignac number, because 2651451603321 - 2³ = 2651451603313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2651451603321.

It is not an unprimeable number, because it can be changed into a prime (2651451603329) 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, 443235325 + ... + 443241306.

It is an arithmetic number, because the mean of its divisors is an integer number (442351839368).

Almost surely, 2^{2651451603321} is an apocalyptic number.

It is an amenable number.

2651451603321 is a deficient number, since it is larger than the sum of its proper divisors (887363111623).

2651451603321 is an equidigital number, since it uses as much as digits as its factorization.

2651451603321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886477631.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 2651451603321 in words is "two trillion, six hundred fifty-one billion, four hundred fifty-one million, six hundred three thousand, three hundred twenty-one".