109721308608 has 336 divisors, whose sum is σ = 337601234880. Its totient is φ = 33950564352.

The previous prime is 109721308607. The next prime is 109721308651. The reversal of 109721308608 is 806803127901.

109721308608 is a `hidden beast` number, since 1 + 0 + 9 + 7 + 2 + 1 + 30 + 8 + 608 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109721308607) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 374475310 + ... + 374475602.

It is an arithmetic number, because the mean of its divisors is an integer number (1004765580).

Almost surely, 2^109721308608 is an apocalyptic number.

109721308608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109721308608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168800617440).

109721308608 is an abundant number, since it is smaller than the sum of its proper divisors (227879926272).

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

109721308608 is a wasteful number, since it uses less digits than its factorization.

109721308608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 711 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 109721308608 in words is "one hundred nine billion, seven hundred twenty-one million, three hundred eight thousand, six hundred eight".