650781552428 has 18 divisors (see below), whose sum is σ = 1324805303556. Its totient is φ = 278906379528.

The previous prime is 650781552427. The next prime is 650781552467. The reversal of 650781552428 is 824255187056.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 650781552428.

It is not an unprimeable number, because it can be changed into a prime (650781552427) 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, 1660156826 + ... + 1660157217.

It is an arithmetic number, because the mean of its divisors is an integer number (73600294642).

Almost surely, 2^650781552428 is an apocalyptic number.

It is an amenable number.

650781552428 is an abundant number, since it is smaller than the sum of its proper divisors (674023751128).

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

650781552428 is a wasteful number, since it uses less digits than its factorization.

650781552428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320314061 (or 3320314052 counting only the distinct ones).

The product of its (nonzero) digits is 5376000, while the sum is 53.

The spelling of 650781552428 in words is "six hundred fifty billion, seven hundred eighty-one million, five hundred fifty-two thousand, four hundred twenty-eight".