649729894101 has 8 divisors (see below), whose sum is σ = 866315390304. Its totient is φ = 433148830320.

The previous prime is 649729894097. The next prime is 649729894111. The reversal of 649729894101 is 101498927946.

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

It is not a de Polignac number, because 649729894101 - 2² = 649729894097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649729894111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 749491 + ... + 1364256.

It is an arithmetic number, because the mean of its divisors is an integer number (108289423788).

Almost surely, 2^649729894101 is an apocalyptic number.

It is an amenable number.

649729894101 is a deficient number, since it is larger than the sum of its proper divisors (216585496203).

649729894101 is a wasteful number, since it uses less digits than its factorization.

649729894101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216211.

The product of its (nonzero) digits is 7838208, while the sum is 60.

The spelling of 649729894101 in words is "six hundred forty-nine billion, seven hundred twenty-nine million, eight hundred ninety-four thousand, one hundred one".