8407981722654 has 24 divisors (see below), whose sum is σ = 18223756167240. Its totient is φ = 2801666353488.

The previous prime is 8407981722653. The next prime is 8407981722667. The reversal of 8407981722654 is 4562271897048.

It is a happy number.

8407981722654 is a `hidden beast` number, since 8 + 407 + 9 + 8 + 172 + 2 + 6 + 54 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 8407981722591 and 8407981722600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8407981722653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82799577 + ... + 82901060.

It is an arithmetic number, because the mean of its divisors is an integer number (759323173635).

Almost surely, 2^{8407981722654} is an apocalyptic number.

8407981722654 is an abundant number, since it is smaller than the sum of its proper divisors (9815774444586).

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

8407981722654 is a wasteful number, since it uses less digits than its factorization.

8407981722654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165703464 (or 165703461 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 63.

The spelling of 8407981722654 in words is "eight trillion, four hundred seven billion, nine hundred eighty-one million, seven hundred twenty-two thousand, six hundred fifty-four".