1630720564351 has 4 divisors (see below), whose sum is σ = 1630753042912. Its totient is φ = 1630688085792.

The previous prime is 1630720564331. The next prime is 1630720564393. The reversal of 1630720564351 is 1534650270361.

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 1630720564351 - 2⁹ = 1630720563839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1630720564298 and 1630720564307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630720564331) 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, 16163850 + ... + 16264423.

It is an arithmetic number, because the mean of its divisors is an integer number (407688260728).

Almost surely, 2^{1630720564351} is an apocalyptic number.

1630720564351 is a deficient number, since it is larger than the sum of its proper divisors (32478561).

1630720564351 is an equidigital number, since it uses as much as digits as its factorization.

1630720564351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32478560.

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 1630720564351 in words is "one trillion, six hundred thirty billion, seven hundred twenty million, five hundred sixty-four thousand, three hundred fifty-one".