649749428153 has 24 divisors (see below), whose sum is σ = 755193039552. Its totient is φ = 547616022624.

The previous prime is 649749428011. The next prime is 649749428171. The reversal of 649749428153 is 351824947946.

It is a de Polignac number, because none of the positive numbers 2^k-649749428153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (649749428953) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17484050 + ... + 17521172.

It is an arithmetic number, because the mean of its divisors is an integer number (31466376648).

Almost surely, 2^649749428153 is an apocalyptic number.

It is an amenable number.

649749428153 is a deficient number, since it is larger than the sum of its proper divisors (105443611399).

649749428153 is an equidigital number, since it uses as much as digits as its factorization.

649749428153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37821 (or 37754 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 62.

The spelling of 649749428153 in words is "six hundred forty-nine billion, seven hundred forty-nine million, four hundred twenty-eight thousand, one hundred fifty-three".