651665060005 has 8 divisors (see below), whose sum is σ = 782015253624. Its totient is φ = 521320593600.

The previous prime is 651665059987. The next prime is 651665060027. The reversal of 651665060005 is 500060566156.

651665060005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 175411867684 + 476253192321 = 418822^2 + 690111^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 651665060005 - 2²³ = 651656671397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 651665060005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1177366 + ... + 1639975.

It is an arithmetic number, because the mean of its divisors is an integer number (97751906703).

Almost surely, 2^651665060005 is an apocalyptic number.

It is an amenable number.

651665060005 is a deficient number, since it is larger than the sum of its proper divisors (130350193619).

651665060005 is a wasteful number, since it uses less digits than its factorization.

651665060005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863607.

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 651665060005 in words is "six hundred fifty-one billion, six hundred sixty-five million, sixty thousand, five".