10649228878 has 4 divisors (see below), whose sum is σ = 15973843320. Its totient is φ = 5324614438.

The previous prime is 10649228867. The next prime is 10649228879. The reversal of 10649228878 is 87882294601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87882294601 = 151 ⋅582001951.

It is a super-2 number, since 2×10649228878² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10649228879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2662307218 + ... + 2662307221.

It is an arithmetic number, because the mean of its divisors is an integer number (3993460830).

Almost surely, 2^10649228878 is an apocalyptic number.

10649228878 is a deficient number, since it is larger than the sum of its proper divisors (5324614442).

10649228878 is an equidigital number, since it uses as much as digits as its factorization.

10649228878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5324614441.

The product of its (nonzero) digits is 3096576, while the sum is 55.

The spelling of 10649228878 in words is "ten billion, six hundred forty-nine million, two hundred twenty-eight thousand, eight hundred seventy-eight".