8537720970240 has 792 divisors, whose sum is σ = 37162261500000. Its totient is φ = 1774063779840.

The previous prime is 8537720970221. The next prime is 8537720970269. The reversal of 8537720970240 is 420790277358.

8537720970240 is a `hidden beast` number, since 8 + 5 + 377 + 20 + 9 + 7 + 0 + 240 = 666.

It is a tau number, because it is divible by the number of its divisors (792).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 38920386 + ... + 39139134.

Almost surely, 2^{8537720970240} is an apocalyptic number.

8537720970240 is a gapful number since it is divisible by the number (80) 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 8537720970240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18581130750000).

8537720970240 is an abundant number, since it is smaller than the sum of its proper divisors (28624540529760).

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

8537720970240 is a wasteful number, since it uses less digits than its factorization.

8537720970240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218809 (or 218777 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 54.

The spelling of 8537720970240 in words is "eight trillion, five hundred thirty-seven billion, seven hundred twenty million, nine hundred seventy thousand, two hundred forty".