53356403649 has 16 divisors (see below), whose sum is σ = 75658210880. Its totient is φ = 33351367680.

The previous prime is 53356403629. The next prime is 53356403663. The reversal of 53356403649 is 94630465335.

It is a happy number.

It is not a de Polignac number, because 53356403649 - 2⁷ = 53356403521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53356403598 and 53356403607.

It is not an unprimeable number, because it can be changed into a prime (53356403629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4819612 + ... + 4830669.

It is an arithmetic number, because the mean of its divisors is an integer number (4728638180).

Almost surely, 2^53356403649 is an apocalyptic number.

It is an amenable number.

53356403649 is a deficient number, since it is larger than the sum of its proper divisors (22301807231).

53356403649 is a wasteful number, since it uses less digits than its factorization.

53356403649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9650400.

The product of its (nonzero) digits is 3499200, while the sum is 48.

The spelling of 53356403649 in words is "fifty-three billion, three hundred fifty-six million, four hundred three thousand, six hundred forty-nine".