655651246530020 has 96 divisors (see below), whose sum is σ = 1488657623620608. Its totient is φ = 241128632143872.

The previous prime is 655651246530017. The next prime is 655651246530061. The reversal of 655651246530020 is 20035642156556.

It is a super-2 number, since 2×655651246530020² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77381957 + ... + 85435763.

It is an arithmetic number, because the mean of its divisors is an integer number (15506850246048).

Almost surely, 2^{655651246530020} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655651246530020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (744328811810304).

655651246530020 is an abundant number, since it is smaller than the sum of its proper divisors (833006377090588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

655651246530020 is a wasteful number, since it uses less digits than its factorization.

655651246530020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8055069 (or 8055067 counting only the distinct ones).

The product of its (nonzero) digits is 6480000, while the sum is 50.

Adding to 655651246530020 its reverse (20035642156556), we get a palindrome (675686888686576).

The spelling of 655651246530020 in words is "six hundred fifty-five trillion, six hundred fifty-one billion, two hundred forty-six million, five hundred thirty thousand, twenty".