616481764066 has 64 divisors (see below), whose sum is σ = 1092850237440. Its totient is φ = 255348973440.

The previous prime is 616481764061. The next prime is 616481764069. The reversal of 616481764066 is 660467184616.

It is a junction number, because it is equal to n+sod(n) for n = 616481763998 and 616481764016.

It is not an unprimeable number, because it can be changed into a prime (616481764061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48190131 + ... + 48202921.

It is an arithmetic number, because the mean of its divisors is an integer number (17075784960).

Almost surely, 2^616481764066 is an apocalyptic number.

616481764066 is a deficient number, since it is larger than the sum of its proper divisors (476368473374).

616481764066 is a wasteful number, since it uses less digits than its factorization.

616481764066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13759.

The product of its (nonzero) digits is 6967296, while the sum is 55.

The spelling of 616481764066 in words is "six hundred sixteen billion, four hundred eighty-one million, seven hundred sixty-four thousand, sixty-six".