9774192117840 has 160 divisors (see below), whose sum is σ = 32118529639680. Its totient is φ = 2450364014592.

The previous prime is 9774192117829. The next prime is 9774192117889. The reversal of 9774192117840 is 487112914779.

It is a Harshad number since it is a multiple of its sum of digits (60).

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 31 ways as a sum of consecutive naturals, for example, 2268546 + ... + 4969374.

It is an arithmetic number, because the mean of its divisors is an integer number (200740810248).

Almost surely, 2^{9774192117840} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9774192117840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16059264819840).

9774192117840 is an abundant number, since it is smaller than the sum of its proper divisors (22344337521840).

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

9774192117840 is a wasteful number, since it uses less digits than its factorization.

9774192117840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2701749 (or 2701743 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 60.

The spelling of 9774192117840 in words is "nine trillion, seven hundred seventy-four billion, one hundred ninety-two million, one hundred seventeen thousand, eight hundred forty".