650561601651 has 16 divisors (see below), whose sum is σ = 939733396224. Its totient is φ = 397948317984.

The previous prime is 650561601631. The next prime is 650561601671. The reversal of 650561601651 is 156106165056.

It is an interprime number because it is at equal distance from previous prime (650561601631) and next prime (650561601671).

It is not a de Polignac number, because 650561601651 - 2¹⁸ = 650561339507 is a prime.

It is a super-3 number, since 3×650561601651³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (650561601601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49936801 + ... + 49949826.

It is an arithmetic number, because the mean of its divisors is an integer number (58733337264).

Almost surely, 2^650561601651 is an apocalyptic number.

650561601651 is a deficient number, since it is larger than the sum of its proper divisors (289171794573).

650561601651 is a wasteful number, since it uses less digits than its factorization.

650561601651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99886810.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 650561601651 in words is "six hundred fifty billion, five hundred sixty-one million, six hundred one thousand, six hundred fifty-one".