11683764540 has 384 divisors, whose sum is σ = 43043481600. Its totient is φ = 2575411200.

The previous prime is 11683764529. The next prime is 11683764559. The reversal of 11683764540 is 4546738611.

11683764540 is a `hidden beast` number, since 1 + 16 + 8 + 37 + 64 + 540 = 666.

It is a super-2 number, since 2×11683764540² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 19440240 + ... + 19440840.

It is an arithmetic number, because the mean of its divisors is an integer number (112092400).

Almost surely, 2^11683764540 is an apocalyptic number.

11683764540 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 11683764540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21521740800).

11683764540 is an abundant number, since it is smaller than the sum of its proper divisors (31359717060).

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

11683764540 is a wasteful number, since it uses less digits than its factorization.

11683764540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802 (or 794 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 11683764540 in words is "eleven billion, six hundred eighty-three million, seven hundred sixty-four thousand, five hundred forty".