650606121606055 has 16 divisors (see below), whose sum is σ = 782570689804800. Its totient is φ = 519256311089152.

The previous prime is 650606121605933. The next prime is 650606121606059. The reversal of 650606121606055 is 550606121606056.

It is a cyclic number.

It is not a de Polignac number, because 650606121606055 - 2¹⁷ = 650606121474983 is a prime.

It is a super-2 number, since 2×650606121606055² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650606121606059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2545384 + ... + 36162013.

It is an arithmetic number, because the mean of its divisors is an integer number (48910668112800).

Almost surely, 2^{650606121606055} is an apocalyptic number.

650606121606055 is a deficient number, since it is larger than the sum of its proper divisors (131964568198745).

650606121606055 is a wasteful number, since it uses less digits than its factorization.

650606121606055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38715338.

The product of its (nonzero) digits is 1944000, while the sum is 49.

Subtracting from 650606121606055 its reverse (550606121606056), we obtain a palindrome (99999999999999).

The spelling of 650606121606055 in words is "six hundred fifty trillion, six hundred six billion, one hundred twenty-one million, six hundred six thousand, fifty-five".