9977378810 has 16 divisors (see below), whose sum is σ = 20524893696. Its totient is φ = 3420815568.

The previous prime is 9977378779. The next prime is 9977378837. The reversal of 9977378810 is 188737799.

It is a super-2 number, since 2×9977378810² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9977378810.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71266922 + ... + 71267061.

It is an arithmetic number, because the mean of its divisors is an integer number (1282805856).

Almost surely, 2^9977378810 is an apocalyptic number.

9977378810 is an abundant number, since it is smaller than the sum of its proper divisors (10547514886).

9977378810 is a wasteful number, since it uses less digits than its factorization.

9977378810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142533997.

The product of its (nonzero) digits is 5334336, while the sum is 59.

The square root of 9977378810 is about 99886.8300127700. The cubic root of 9977378810 is about 2152.8089343151.

The spelling of 9977378810 in words is "nine billion, nine hundred seventy-seven million, three hundred seventy-eight thousand, eight hundred ten".