108747215667720 has 1536 divisors, whose sum is σ = 445699101818880. Its totient is φ = 23310886579200.

The previous prime is 108747215667691. The next prime is 108747215667757. The reversal of 108747215667720 is 27766512747801.

It is a happy number.

108747215667720 is a `hidden beast` number, since 1 + 0 + 8 + 7 + 47 + 2 + 1 + 566 + 7 + 7 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 23381467395 + ... + 23381472045.

It is an arithmetic number, because the mean of its divisors is an integer number (290168686080).

Almost surely, 2^{108747215667720} is an apocalyptic number.

108747215667720 is a gapful number since it is divisible by the number (10) 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 108747215667720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222849550909440).

108747215667720 is an abundant number, since it is smaller than the sum of its proper divisors (336951886151160).

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

108747215667720 is a wasteful number, since it uses less digits than its factorization.

108747215667720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4997 (or 4981 counting only the distinct ones).

The product of its (nonzero) digits is 55319040, while the sum is 63.

The spelling of 108747215667720 in words is "one hundred eight trillion, seven hundred forty-seven billion, two hundred fifteen million, six hundred sixty-seven thousand, seven hundred twenty".