53505704661 has 16 divisors (see below), whose sum is σ = 75599736000. Its totient is φ = 33566272128.

The previous prime is 53505704617. The next prime is 53505704713. The reversal of 53505704661 is 16640750535.

It is not a de Polignac number, because 53505704661 - 2⁶ = 53505704597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53505704611) 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, 3141496 + ... + 3158481.

It is an arithmetic number, because the mean of its divisors is an integer number (4724983500).

Almost surely, 2^53505704661 is an apocalyptic number.

It is an amenable number.

53505704661 is a deficient number, since it is larger than the sum of its proper divisors (22094031339).

53505704661 is a wasteful number, since it uses less digits than its factorization.

53505704661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6300148.

The product of its (nonzero) digits is 378000, while the sum is 42.

The spelling of 53505704661 in words is "fifty-three billion, five hundred five million, seven hundred four thousand, six hundred sixty-one".