11700322640 has 80 divisors (see below), whose sum is σ = 28603276416. Its totient is φ = 4442380800.

The previous prime is 11700322633. The next prime is 11700322657. The reversal of 11700322640 is 4622300711.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216770 + ... + 265310.

Almost surely, 2^11700322640 is an apocalyptic number.

11700322640 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 11700322640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14301638208).

11700322640 is an abundant number, since it is smaller than the sum of its proper divisors (16902953776).

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

11700322640 is a wasteful number, since it uses less digits than its factorization.

11700322640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48708 (or 48702 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The spelling of 11700322640 in words is "eleven billion, seven hundred million, three hundred twenty-two thousand, six hundred forty".