10889640454 has 16 divisors (see below), whose sum is σ = 20365042176. Its totient is φ = 4242717000.

The previous prime is 10889640439. The next prime is 10889640469. The reversal of 10889640454 is 45404698801.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10889640439) and next prime (10889640469).

It is a super-2 number, since 2×10889640454² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10889640398 and 10889640407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35355822 + ... + 35356129.

It is an arithmetic number, because the mean of its divisors is an integer number (1272815136).

Almost surely, 2^10889640454 is an apocalyptic number.

10889640454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

10889640454 is a deficient number, since it is larger than the sum of its proper divisors (9475401722).

10889640454 is a wasteful number, since it uses less digits than its factorization.

10889640454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70711971.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The spelling of 10889640454 in words is "ten billion, eight hundred eighty-nine million, six hundred forty thousand, four hundred fifty-four".