649433275141 has 6 divisors (see below), whose sum is σ = 755463197670. Its totient is φ = 556657092936.

The previous prime is 649433275093. The next prime is 649433275147. The reversal of 649433275141 is 141572334946.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 586685530116 + 62747745025 = 765954^2 + 250495^2 .

It is not a de Polignac number, because 649433275141 - 2⁷ = 649433275013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 13253740309 = 649433275141 / (6 + 4 + 9 + 4 + 3 + 3 + 2 + 7 + 5 + 1 + 4 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649433275147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6626870106 + ... + 6626870203.

It is an arithmetic number, because the mean of its divisors is an integer number (125910532945).

Almost surely, 2^649433275141 is an apocalyptic number.

It is an amenable number.

649433275141 is a deficient number, since it is larger than the sum of its proper divisors (106029922529).

649433275141 is a wasteful number, since it uses less digits than its factorization.

649433275141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13253740323 (or 13253740316 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 49.

The spelling of 649433275141 in words is "six hundred forty-nine billion, four hundred thirty-three million, two hundred seventy-five thousand, one hundred forty-one".