649098135813 has 4 divisors (see below), whose sum is σ = 865464181088. Its totient is φ = 432732090540.

The previous prime is 649098135781. The next prime is 649098135911. The reversal of 649098135813 is 318531890946.

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 649098135813 - 2⁵ = 649098135781 is a prime.

It is a super-3 number, since 3×649098135813³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649098135313) 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, 108183022633 + ... + 108183022638.

It is an arithmetic number, because the mean of its divisors is an integer number (216366045272).

Almost surely, 2^649098135813 is an apocalyptic number.

It is an amenable number.

649098135813 is a deficient number, since it is larger than the sum of its proper divisors (216366045275).

649098135813 is a wasteful number, since it uses less digits than its factorization.

649098135813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216366045274.

The product of its (nonzero) digits is 5598720, while the sum is 57.

The spelling of 649098135813 in words is "six hundred forty-nine billion, ninety-eight million, one hundred thirty-five thousand, eight hundred thirteen".