10649747988 has 288 divisors, whose sum is σ = 33022080000. Its totient is φ = 2852029440.

The previous prime is 10649747987. The next prime is 10649748017. The reversal of 10649747988 is 88974794601.

10649747988 is a `hidden beast` number, since 10 + 6 + 497 + 47 + 98 + 8 = 666.

It is a super-2 number, since 2×10649747988² (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 (10649747987) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17778913 + ... + 17779511.

It is an arithmetic number, because the mean of its divisors is an integer number (114660000).

Almost surely, 2^10649747988 is an apocalyptic number.

10649747988 is a gapful number since it is divisible by the number (18) 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 10649747988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16511040000).

10649747988 is an abundant number, since it is smaller than the sum of its proper divisors (22372332012).

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

10649747988 is a wasteful number, since it uses less digits than its factorization.

10649747988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795 (or 790 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 63.

The spelling of 10649747988 in words is "ten billion, six hundred forty-nine million, seven hundred forty-seven thousand, nine hundred eighty-eight".