651516650145 has 24 divisors (see below), whose sum is σ = 1130815498176. Its totient is φ = 347007863328.

The previous prime is 651516650143. The next prime is 651516650177. The reversal of 651516650145 is 541056615156.

651516650145 is a `hidden beast` number, since 6 + 51 + 51 + 6 + 6 + 501 + 45 = 666.

It is not a de Polignac number, because 651516650145 - 2¹ = 651516650143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 651516650145.

It is not an unprimeable number, because it can be changed into a prime (651516650143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9709599 + ... + 9776468.

It is an arithmetic number, because the mean of its divisors is an integer number (47117312424).

Almost surely, 2^651516650145 is an apocalyptic number.

It is an amenable number.

651516650145 is a deficient number, since it is larger than the sum of its proper divisors (479298848031).

651516650145 is a wasteful number, since it uses less digits than its factorization.

651516650145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19486821 (or 19486818 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 45.

The spelling of 651516650145 in words is "six hundred fifty-one billion, five hundred sixteen million, six hundred fifty thousand, one hundred forty-five".