8101215740 has 48 divisors (see below), whose sum is σ = 17731983360. Its totient is φ = 3105483840.

The previous prime is 8101215737. The next prime is 8101215767. The reversal of 8101215740 is 475121018.

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 15 ways as a sum of consecutive naturals, for example, 431 + ... + 127289.

It is an arithmetic number, because the mean of its divisors is an integer number (369416320).

Almost surely, 2^8101215740 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 8101215740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8865991680).

8101215740 is an abundant number, since it is smaller than the sum of its proper divisors (9630767620).

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

8101215740 is a wasteful number, since it uses less digits than its factorization.

8101215740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127002 (or 127000 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 8101215740 is about 90006.7538576967. The cubic root of 8101215740 is about 2008.3993213206.

Adding to 8101215740 its reverse (475121018), we get a palindrome (8576336758).

The spelling of 8101215740 in words is "eight billion, one hundred one million, two hundred fifteen thousand, seven hundred forty".