649165755293 has 4 divisors (see below), whose sum is σ = 708180823968. Its totient is φ = 590150686620.

The previous prime is 649165755253. The next prime is 649165755313. The reversal of 649165755293 is 392557561946.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 649165755293 - 2¹² = 649165751197 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 (649165755253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29507534321 + ... + 29507534342.

It is an arithmetic number, because the mean of its divisors is an integer number (177045205992).

Almost surely, 2^649165755293 is an apocalyptic number.

It is an amenable number.

649165755293 is a deficient number, since it is larger than the sum of its proper divisors (59015068675).

649165755293 is a wasteful number, since it uses less digits than its factorization.

649165755293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59015068674.

The product of its digits is 61236000, while the sum is 62.

The spelling of 649165755293 in words is "six hundred forty-nine billion, one hundred sixty-five million, seven hundred fifty-five thousand, two hundred ninety-three".