53602639649 has 8 divisors (see below), whose sum is σ = 57773369640. Its totient is φ = 49438688256.

The previous prime is 53602639619. The next prime is 53602639691. The reversal of 53602639649 is 94693620635.

It can be written as a sum of positive squares in 4 ways, for example, as 3820105249 + 49782534400 = 61807^2 + 223120^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53602639649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53602639649.

It is not an unprimeable number, because it can be changed into a prime (53602639619) 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, 1678214 + ... + 1709855.

It is an arithmetic number, because the mean of its divisors is an integer number (7221671205).

Almost surely, 2^53602639649 is an apocalyptic number.

It is an amenable number.

53602639649 is a deficient number, since it is larger than the sum of its proper divisors (4170729991).

53602639649 is a wasteful number, since it uses less digits than its factorization.

53602639649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3389299.

The product of its (nonzero) digits is 6298560, while the sum is 53.

The spelling of 53602639649 in words is "fifty-three billion, six hundred two million, six hundred thirty-nine thousand, six hundred forty-nine".