646050403653 has 8 divisors (see below), whose sum is σ = 862053614400. Its totient is φ = 430373731008.

The previous prime is 646050403639. The next prime is 646050403711. The reversal of 646050403653 is 356304050646.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 646050403653 - 2¹³ = 646050395461 is a prime.

It is a super-2 number, since 2×646050403653² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646050403633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81629908 + ... + 81637821.

It is an arithmetic number, because the mean of its divisors is an integer number (107756701800).

Almost surely, 2^646050403653 is an apocalyptic number.

It is an amenable number.

646050403653 is a deficient number, since it is larger than the sum of its proper divisors (216003210747).

646050403653 is a wasteful number, since it uses less digits than its factorization.

646050403653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163269051.

The product of its (nonzero) digits is 777600, while the sum is 42.

The spelling of 646050403653 in words is "six hundred forty-six billion, fifty million, four hundred three thousand, six hundred fifty-three".