9621881843436 has 36 divisors (see below), whose sum is σ = 25160668041600. Its totient is φ = 3096697604448.

The previous prime is 9621881843429. The next prime is 9621881843443. The reversal of 9621881843436 is 6343481881269.

9621881843436 is a `hidden beast` number, since 9 + 6 + 2 + 18 + 8 + 184 + 3 + 436 = 666.

It is an interprime number because it is at equal distance from previous prime (9621881843429) and next prime (9621881843443).

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×9621881843436² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4608179916 + ... + 4608182003.

It is an arithmetic number, because the mean of its divisors is an integer number (698907445600).

Almost surely, 2^{9621881843436} is an apocalyptic number.

It is an amenable number.

9621881843436 is an abundant number, since it is smaller than the sum of its proper divisors (15538786198164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9621881843436 is a wasteful number, since it uses less digits than its factorization.

9621881843436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9216361958 (or 9216361953 counting only the distinct ones).

The product of its digits is 47775744, while the sum is 63.

The spelling of 9621881843436 in words is "nine trillion, six hundred twenty-one billion, eight hundred eighty-one million, eight hundred forty-three thousand, four hundred thirty-six".