648496215028 has 12 divisors (see below), whose sum is σ = 1136198825860. Its totient is φ = 323867979072.

The previous prime is 648496215019. The next prime is 648496215083. The reversal of 648496215028 is 820512694846.

It can be written as a sum of positive squares in 2 ways, for example, as 94659598224 + 553836616804 = 307668^2 + 744202^2 .

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 648496215028.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95028273 + ... + 95035096.

Almost surely, 2^648496215028 is an apocalyptic number.

It is an amenable number.

648496215028 is a deficient number, since it is larger than the sum of its proper divisors (487702610832).

648496215028 is a wasteful number, since it uses less digits than its factorization.

648496215028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190064226 (or 190064224 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 55.

The spelling of 648496215028 in words is "six hundred forty-eight billion, four hundred ninety-six million, two hundred fifteen thousand, twenty-eight".