96621957561 has 8 divisors (see below), whose sum is σ = 128831783680. Its totient is φ = 64413384912.

The previous prime is 96621957533. The next prime is 96621957581. The reversal of 96621957561 is 16575912669.

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

It is not a de Polignac number, because 96621957561 - 2¹⁰ = 96621956537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (96621957581) 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, 115690 + ... + 454563.

It is an arithmetic number, because the mean of its divisors is an integer number (16103972960).

Almost surely, 2^96621957561 is an apocalyptic number.

It is an amenable number.

96621957561 is a deficient number, since it is larger than the sum of its proper divisors (32209826119).

96621957561 is a wasteful number, since it uses less digits than its factorization.

96621957561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626735.

The product of its digits is 6123600, while the sum is 57.

The spelling of 96621957561 in words is "ninety-six billion, six hundred twenty-one million, nine hundred fifty-seven thousand, five hundred sixty-one".