10899752978 has 8 divisors (see below), whose sum is σ = 16370782668. Its totient is φ = 5442825424.

The previous prime is 10899752957. The next prime is 10899752989. The reversal of 10899752978 is 87925799801.

It can be written as a sum of positive squares in 2 ways, for example, as 8586431569 + 2313321409 = 92663^2 + 48097^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×10899752978² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3523601 + ... + 3526692.

Almost surely, 2^10899752978 is an apocalyptic number.

10899752978 is a deficient number, since it is larger than the sum of its proper divisors (5471029690).

10899752978 is an equidigital number, since it uses as much as digits as its factorization.

10899752978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7051068.

The product of its (nonzero) digits is 22861440, while the sum is 65.

The spelling of 10899752978 in words is "ten billion, eight hundred ninety-nine million, seven hundred fifty-two thousand, nine hundred seventy-eight".