649214533523 has 4 divisors (see below), whose sum is σ = 650680029528. Its totient is φ = 647749037520.

The previous prime is 649214533511. The next prime is 649214533531. The reversal of 649214533523 is 325335412946.

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

It is a cyclic number.

It is not a de Polignac number, because 649214533523 - 2¹⁶ = 649214467987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (649214533543) 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, 732747338 + ... + 732748223.

It is an arithmetic number, because the mean of its divisors is an integer number (162670007382).

Almost surely, 2^649214533523 is an apocalyptic number.

649214533523 is a deficient number, since it is larger than the sum of its proper divisors (1465496005).

649214533523 is a wasteful number, since it uses less digits than its factorization.

649214533523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465496004.

The product of its digits is 2332800, while the sum is 47.

The spelling of 649214533523 in words is "six hundred forty-nine billion, two hundred fourteen million, five hundred thirty-three thousand, five hundred twenty-three".