9961487546555 has 8 divisors (see below), whose sum is σ = 11953853650752. Its totient is φ = 7969144307328.

The previous prime is 9961487546519. The next prime is 9961487546561. The reversal of 9961487546555 is 5556457841699.

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

It is a cyclic number.

It is not a de Polignac number, because 9961487546555 - 2¹⁴ = 9961487530171 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4742702 + ... + 6512771.

It is an arithmetic number, because the mean of its divisors is an integer number (1494231706344).

Almost surely, 2^{9961487546555} is an apocalyptic number.

9961487546555 is a deficient number, since it is larger than the sum of its proper divisors (1992366104197).

9961487546555 is a wasteful number, since it uses less digits than its factorization.

9961487546555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11432485.

The product of its digits is 1632960000, while the sum is 74.

The spelling of 9961487546555 in words is "nine trillion, nine hundred sixty-one billion, four hundred eighty-seven million, five hundred forty-six thousand, five hundred fifty-five".