649603264953 has 4 divisors (see below), whose sum is σ = 866137686608. Its totient is φ = 433068843300.

The previous prime is 649603264951. The next prime is 649603264987. The reversal of 649603264953 is 359462306946.

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 649603264953 - 2¹ = 649603264951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 649603264893 and 649603264902.

It is not an unprimeable number, because it can be changed into a prime (649603264951) 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, 108267210823 + ... + 108267210828.

It is an arithmetic number, because the mean of its divisors is an integer number (216534421652).

Almost surely, 2^649603264953 is an apocalyptic number.

It is an amenable number.

649603264953 is a deficient number, since it is larger than the sum of its proper divisors (216534421655).

649603264953 is a wasteful number, since it uses less digits than its factorization.

649603264953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216534421654.

The product of its (nonzero) digits is 25194240, while the sum is 57.

The spelling of 649603264953 in words is "six hundred forty-nine billion, six hundred three million, two hundred sixty-four thousand, nine hundred fifty-three".