9947934256055 has 16 divisors (see below), whose sum is σ = 11945378297664. Its totient is φ = 7953110146560.

The previous prime is 9947934255971. The next prime is 9947934256063. The reversal of 9947934256055 is 5506524397499.

It is a de Polignac number, because none of the positive numbers 2^k-9947934256055 is a prime.

It is a super-2 number, since 2×9947934256055² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104644445 + ... + 104739465.

It is an arithmetic number, because the mean of its divisors is an integer number (746586143604).

Almost surely, 2^{9947934256055} is an apocalyptic number.

9947934256055 is a deficient number, since it is larger than the sum of its proper divisors (1997444041609).

9947934256055 is a wasteful number, since it uses less digits than its factorization.

9947934256055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108586.

The product of its (nonzero) digits is 367416000, while the sum is 68.

The spelling of 9947934256055 in words is "nine trillion, nine hundred forty-seven billion, nine hundred thirty-four million, two hundred fifty-six thousand, fifty-five".