10187786434447 has 8 divisors (see below), whose sum is σ = 10272084299136. Its totient is φ = 10103632547712.

The previous prime is 10187786434409. The next prime is 10187786434481. The reversal of 10187786434447 is 74443468778101.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10187786434447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10187786134447) 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, 35852383 + ... + 36135424.

It is an arithmetic number, because the mean of its divisors is an integer number (1284010537392).

Almost surely, 2^{10187786434447} is an apocalyptic number.

10187786434447 is a deficient number, since it is larger than the sum of its proper divisors (84297864689).

10187786434447 is a wasteful number, since it uses less digits than its factorization.

10187786434447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71988977.

The product of its (nonzero) digits is 101154816, while the sum is 64.

The spelling of 10187786434447 in words is "ten trillion, one hundred eighty-seven billion, seven hundred eighty-six million, four hundred thirty-four thousand, four hundred forty-seven".