10891742454 has 48 divisors (see below), whose sum is σ = 24433390800.
Its totient is φ = 3502392768.
The previous prime is 10891742443. The next prime is 10891742467. The reversal of 10891742454 is 45424719801.
10891742454 is a `hidden beast` number, since 108 + 91 + 7 + 4 + 2 + 454 = 666.
10891742454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 648912 + ... + 665484.
It is an arithmetic number, because the mean of its divisors is an integer number (509028975).
Almost surely, 210891742454 is an apocalyptic number.
10891742454 is an abundant number, since it is smaller than the sum of its proper divisors (13541648346).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
10891742454 is a wasteful number, since it uses less digits than its factorization.
10891742454 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 17869 (or 17866 counting only the distinct ones).
The product of its (nonzero) digits is 322560, while the sum is 45.
The spelling of 10891742454 in words is "ten billion, eight hundred ninety-one million, seven hundred forty-two thousand, four hundred fifty-four".