10191936457391 has 8 divisors (see below), whose sum is σ = 11155864874784. Its totient is φ = 9253712797920.

The previous prime is 10191936457291. The next prime is 10191936457399. The reversal of 10191936457391 is 19375463919101.

It is a happy number.

10191936457391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 10191936457391 - 2¹⁰ = 10191936456367 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10191936457391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10191936457399) 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, 6426188651 + ... + 6426190236.

It is an arithmetic number, because the mean of its divisors is an integer number (1394483109348).

Almost surely, 2^{10191936457391} is an apocalyptic number.

10191936457391 is a deficient number, since it is larger than the sum of its proper divisors (963928417393).

10191936457391 is a wasteful number, since it uses less digits than its factorization.

10191936457391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12852378961.

The product of its (nonzero) digits is 5511240, while the sum is 59.

The spelling of 10191936457391 in words is "ten trillion, one hundred ninety-one billion, nine hundred thirty-six million, four hundred fifty-seven thousand, three hundred ninety-one".