651600005661 has 64 divisors (see below), whose sum is σ = 1060405632000. Its totient is φ = 392170040640.

The previous prime is 651600005659. The next prime is 651600005663. The reversal of 651600005661 is 166500006156.

651600005661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (651600005659) and next prime (651600005663).

It is not a de Polignac number, because 651600005661 - 2¹ = 651600005659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651600005663) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 69174610 + ... + 69184028.

It is an arithmetic number, because the mean of its divisors is an integer number (16568838000).

Almost surely, 2^651600005661 is an apocalyptic number.

It is an amenable number.

651600005661 is a deficient number, since it is larger than the sum of its proper divisors (408805626339).

651600005661 is a wasteful number, since it uses less digits than its factorization.

651600005661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11031 (or 11025 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 651600005661 in words is "six hundred fifty-one billion, six hundred million, five thousand, six hundred sixty-one".