651142661660 has 12 divisors (see below), whose sum is σ = 1367399589528. Its totient is φ = 260457064656.

The previous prime is 651142661627. The next prime is 651142661681. The reversal of 651142661660 is 66166241156.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16278566522 + ... + 16278566561.

It is an arithmetic number, because the mean of its divisors is an integer number (113949965794).

Almost surely, 2^651142661660 is an apocalyptic number.

It is an amenable number.

651142661660 is an abundant number, since it is smaller than the sum of its proper divisors (716256927868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

651142661660 is a wasteful number, since it uses less digits than its factorization.

651142661660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32557133092 (or 32557133090 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 651142661660 in words is "six hundred fifty-one billion, one hundred forty-two million, six hundred sixty-one thousand, six hundred sixty".