646054553111 has 8 divisors (see below), whose sum is σ = 705643158144. Its totient is φ = 586608676920.

The previous prime is 646054553107. The next prime is 646054553117. The reversal of 646054553111 is 111355450646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 646054553111 - 2² = 646054553107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646054553117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35672741 + ... + 35690846.

It is an arithmetic number, because the mean of its divisors is an integer number (88205394768).

Almost surely, 2^646054553111 is an apocalyptic number.

646054553111 is a deficient number, since it is larger than the sum of its proper divisors (59588605033).

646054553111 is a wasteful number, since it uses less digits than its factorization.

646054553111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71364421.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 646054553111 in words is "six hundred forty-six billion, fifty-four million, five hundred fifty-three thousand, one hundred eleven".