651645606546156 has 24 divisors (see below), whose sum is σ = 1572937670974320. Its totient is φ = 209725022796352.

The previous prime is 651645606546139. The next prime is 651645606546157.

651645606546156 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (651645606546157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 936272422851 + ... + 936272423546.

It is an arithmetic number, because the mean of its divisors is an integer number (65539069623930).

Almost surely, 2^{651645606546156} is an apocalyptic number.

It is an amenable number.

651645606546156 is an abundant number, since it is smaller than the sum of its proper divisors (921292064428164).

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

651645606546156 is a wasteful number, since it uses less digits than its factorization.

651645606546156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872544846433 (or 1872544846431 counting only the distinct ones).

The product of its (nonzero) digits is 466560000, while the sum is 66.

The spelling of 651645606546156 in words is "six hundred fifty-one trillion, six hundred forty-five billion, six hundred six million, five hundred forty-six thousand, one hundred fifty-six".