10749540780 has 720 divisors, whose sum is σ = 40229925120. Its totient is φ = 2395008000.

The previous prime is 10749540779. The next prime is 10749540787. The reversal of 10749540780 is 8704594701.

It is a happy number.

10749540780 is a `hidden beast` number, since 10 + 74 + 95 + 407 + 80 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (10749540787) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 176221950 + ... + 176222010.

It is an arithmetic number, because the mean of its divisors is an integer number (55874896).

Almost surely, 2^10749540780 is an apocalyptic number.

10749540780 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 10749540780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20114962560).

10749540780 is an abundant number, since it is smaller than the sum of its proper divisors (29480384340).

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

10749540780 is a wasteful number, since it uses less digits than its factorization.

10749540780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 10749540780 in words is "ten billion, seven hundred forty-nine million, five hundred forty thousand, seven hundred eighty".