649169941762 has 4 divisors (see below), whose sum is σ = 973754912646. Its totient is φ = 324584970880.

The previous prime is 649169941729. The next prime is 649169941781. The reversal of 649169941762 is 267149961946.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 646690997241 + 2478944521 = 804171^2 + 49789^2 .

It is a super-2 number, since 2×649169941762² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 649169941694 and 649169941703.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162292485439 + ... + 162292485442.

Almost surely, 2^649169941762 is an apocalyptic number.

649169941762 is a deficient number, since it is larger than the sum of its proper divisors (324584970884).

649169941762 is a wasteful number, since it uses less digits than its factorization.

649169941762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324584970883.

The product of its digits is 35271936, while the sum is 64.

The spelling of 649169941762 in words is "six hundred forty-nine billion, one hundred sixty-nine million, nine hundred forty-one thousand, seven hundred sixty-two".