11473408978 has 8 divisors (see below), whose sum is σ = 17445868668. Its totient is φ = 5658119424.

The previous prime is 11473408957. The next prime is 11473408979. The reversal of 11473408978 is 87980437411.

It can be written as a sum of positive squares in 2 ways, for example, as 11350132369 + 123276609 = 106537^2 + 11103^2 .

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

It is a super-2 number, since 2×11473408978² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11473408979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39292351 + ... + 39292642.

Almost surely, 2^11473408978 is an apocalyptic number.

11473408978 is a deficient number, since it is larger than the sum of its proper divisors (5972459690).

11473408978 is an equidigital number, since it uses as much as digits as its factorization.

11473408978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78585068.

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 11473408978 in words is "eleven billion, four hundred seventy-three million, four hundred eight thousand, nine hundred seventy-eight".