662311551421 has 8 divisors (see below), whose sum is σ = 713555942400. Its totient is φ = 611109638832.

The previous prime is 662311551409. The next prime is 662311551457. The reversal of 662311551421 is 124155113266.

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 662311551421 - 2¹¹ = 662311549373 is a prime.

It is a super-2 number, since 2×662311551421² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662311555421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10587205 + ... + 10649578.

It is an arithmetic number, because the mean of its divisors is an integer number (89194492800).

Almost surely, 2^662311551421 is an apocalyptic number.

It is an amenable number.

662311551421 is a deficient number, since it is larger than the sum of its proper divisors (51244390979).

662311551421 is a wasteful number, since it uses less digits than its factorization.

662311551421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21239195.

The product of its digits is 43200, while the sum is 37.

Adding to 662311551421 its reverse (124155113266), we get a palindrome (786466664687).

The spelling of 662311551421 in words is "six hundred sixty-two billion, three hundred eleven million, five hundred fifty-one thousand, four hundred twenty-one".