10891042403 has 4 divisors (see below), whose sum is σ = 10998874608. Its totient is φ = 10783210200.

The previous prime is 10891042399. The next prime is 10891042427. The reversal of 10891042403 is 30424019801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30424019801 = 7 ⋅4346288543.

It is a cyclic number.

It is not a de Polignac number, because 10891042403 - 2² = 10891042399 is a prime.

It is a super-2 number, since 2×10891042403² (a number of 21 digits) contains 22 as substring.

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 10891042403.

It is not an unprimeable number, because it can be changed into a prime (10891042433) 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, 53915951 + ... + 53916152.

It is an arithmetic number, because the mean of its divisors is an integer number (2749718652).

Almost surely, 2^10891042403 is an apocalyptic number.

10891042403 is a deficient number, since it is larger than the sum of its proper divisors (107832205).

10891042403 is a wasteful number, since it uses less digits than its factorization.

10891042403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107832204.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 10891042403 in words is "ten billion, eight hundred ninety-one million, forty-two thousand, four hundred three".