9961854742 has 24 divisors (see below), whose sum is σ = 17385959880. Its totient is φ = 4268496960.

The previous prime is 9961854739. The next prime is 9961854761. The reversal of 9961854742 is 2474581699.

9961854742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 778734 + ... + 791422.

It is an arithmetic number, because the mean of its divisors is an integer number (724414995).

Almost surely, 2^9961854742 is an apocalyptic number.

9961854742 is a deficient number, since it is larger than the sum of its proper divisors (7424105138).

9961854742 is a wasteful number, since it uses less digits than its factorization.

9961854742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20716 (or 20709 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 55.

The square root of 9961854742 is about 99809.0914796844. The cubic root of 9961854742 is about 2151.6918172471.

The spelling of 9961854742 in words is "nine billion, nine hundred sixty-one million, eight hundred fifty-four thousand, seven hundred forty-two".