616435506645654 has 32 divisors (see below), whose sum is σ = 1233827371054080. Its totient is φ = 205319114728832.

The previous prime is 616435506645631. The next prime is 616435506645671. The reversal of 616435506645654 is 456546605534616.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 470759422 + ... + 472067054.

It is an arithmetic number, because the mean of its divisors is an integer number (38557105345440).

Almost surely, 2^{616435506645654} is an apocalyptic number.

616435506645654 is an abundant number, since it is smaller than the sum of its proper divisors (617391864408426).

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

616435506645654 is a wasteful number, since it uses less digits than its factorization.

616435506645654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368524.

The product of its (nonzero) digits is 933120000, while the sum is 66.

The spelling of 616435506645654 in words is "six hundred sixteen trillion, four hundred thirty-five billion, five hundred six million, six hundred forty-five thousand, six hundred fifty-four".