10919127780 has 96 divisors (see below), whose sum is σ = 37058878080. Its totient is φ = 2647059840.

The previous prime is 10919127733. The next prime is 10919127823. The reversal of 10919127780 is 8772191901.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 913179 + ... + 925058.

It is an arithmetic number, because the mean of its divisors is an integer number (386029980).

Almost surely, 2^10919127780 is an apocalyptic number.

10919127780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10919127780 is an abundant number, since it is smaller than the sum of its proper divisors (26139750300).

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

10919127780 is a wasteful number, since it uses less digits than its factorization.

10919127780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838266 (or 1838258 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 45.

The spelling of 10919127780 in words is "ten billion, nine hundred nineteen million, one hundred twenty-seven thousand, seven hundred eighty".