10131782478194 has 8 divisors (see below), whose sum is σ = 16366725541740. Its totient is φ = 4676207297616.

The previous prime is 10131782478137. The next prime is 10131782478199. The reversal of 10131782478194 is 49187428713101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8686653919969 + 1445128558225 = 2947313^2 + 1202135^2 .

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

It is not an unprimeable number, because it can be changed into a prime (10131782478199) 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, 194841970709 + ... + 194841970760.

Almost surely, 2^{10131782478194} is an apocalyptic number.

10131782478194 is a deficient number, since it is larger than the sum of its proper divisors (6234943063546).

10131782478194 is a wasteful number, since it uses less digits than its factorization.

10131782478194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389683941484.

The product of its (nonzero) digits is 2709504, while the sum is 56.

The spelling of 10131782478194 in words is "ten trillion, one hundred thirty-one billion, seven hundred eighty-two million, four hundred seventy-eight thousand, one hundred ninety-four".