650615130612 has 18 divisors (see below), whose sum is σ = 1644610469138. Its totient is φ = 216871710192.

The previous prime is 650615130611. The next prime is 650615130653. The reversal of 650615130612 is 216031516056.

650615130612 is a `hidden beast` number, since 6 + 5 + 0 + 6 + 1 + 5 + 1 + 30 + 612 = 666.

It can be written as a sum of positive squares in only one way, i.e., 560647527696 + 89967602916 = 748764^2 + 299946^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 18072642517 = 650615130612 / (6 + 5 + 0 + 6 + 1 + 5 + 1 + 3 + 0 + 6 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650615130611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9036321223 + ... + 9036321294.

Almost surely, 2^650615130612 is an apocalyptic number.

It is an amenable number.

650615130612 is an abundant number, since it is smaller than the sum of its proper divisors (993995338526).

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

650615130612 is a wasteful number, since it uses less digits than its factorization.

650615130612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18072642527 (or 18072642522 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

Adding to 650615130612 its reverse (216031516056), we get a palindrome (866646646668).

The spelling of 650615130612 in words is "six hundred fifty billion, six hundred fifteen million, one hundred thirty thousand, six hundred twelve".