650510551651 has 4 divisors (see below), whose sum is σ = 651451956904. Its totient is φ = 649569146400.

The previous prime is 650510551619. The next prime is 650510551661. The reversal of 650510551651 is 156155015056.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 650510551651 - 2⁵ = 650510551619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (650510551661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470701590 + ... + 470702971.

It is an arithmetic number, because the mean of its divisors is an integer number (162862989226).

Almost surely, 2^650510551651 is an apocalyptic number.

650510551651 is a deficient number, since it is larger than the sum of its proper divisors (941405253).

650510551651 is an equidigital number, since it uses as much as digits as its factorization.

650510551651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941405252.

The product of its (nonzero) digits is 112500, while the sum is 40.

The spelling of 650510551651 in words is "six hundred fifty billion, five hundred ten million, five hundred fifty-one thousand, six hundred fifty-one".