9504359661 has 16 divisors (see below), whose sum is σ = 12718632960. Its totient is φ = 6313197120.

The previous prime is 9504359653. The next prime is 9504359717. The reversal of 9504359661 is 1669534059.

It is a happy number.

It is not a de Polignac number, because 9504359661 - 2³ = 9504359653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9504359661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9504359651) 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, 1371796 + ... + 1378706.

It is an arithmetic number, because the mean of its divisors is an integer number (794914560).

Almost surely, 2^9504359661 is an apocalyptic number.

It is an amenable number.

9504359661 is a deficient number, since it is larger than the sum of its proper divisors (3214273299).

9504359661 is a wasteful number, since it uses less digits than its factorization.

9504359661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8516.

The product of its (nonzero) digits is 874800, while the sum is 48.

The square root of 9504359661 is about 97490.3054718776. The cubic root of 9504359661 is about 2118.2357207368.

The spelling of 9504359661 in words is "nine billion, five hundred four million, three hundred fifty-nine thousand, six hundred sixty-one".