11810638970 has 16 divisors (see below), whose sum is σ = 22894469640. Its totient is φ = 4360851264.

The previous prime is 11810638927. The next prime is 11810638979. The reversal of 11810638970 is 7983601811.

It can be written as a sum of positive squares in 4 ways, for example, as 10604674441 + 1205964529 = 102979^2 + 34727^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11810638979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45425405 + ... + 45425664.

Almost surely, 2^11810638970 is an apocalyptic number.

11810638970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11810638970 is a deficient number, since it is larger than the sum of its proper divisors (11083830670).

11810638970 is a wasteful number, since it uses less digits than its factorization.

11810638970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90851089.

The product of its (nonzero) digits is 72576, while the sum is 44.

The spelling of 11810638970 in words is "eleven billion, eight hundred ten million, six hundred thirty-eight thousand, nine hundred seventy".