5511428011491 has 8 divisors (see below), whose sum is σ = 7527804113424. Its totient is φ = 3584668625280.

The previous prime is 5511428011489. The next prime is 5511428011499. The reversal of 5511428011491 is 1941108241155.

It is a happy number.

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

It is not a de Polignac number, because 5511428011491 - 2¹ = 5511428011489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5511428011499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22404178786 + ... + 22404179031.

It is an arithmetic number, because the mean of its divisors is an integer number (940975514178).

Almost surely, 2^{5511428011491} is an apocalyptic number.

5511428011491 is a deficient number, since it is larger than the sum of its proper divisors (2016376101933).

5511428011491 is a wasteful number, since it uses less digits than its factorization.

5511428011491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44808357861.

The product of its (nonzero) digits is 57600, while the sum is 42.

The spelling of 5511428011491 in words is "five trillion, five hundred eleven billion, four hundred twenty-eight million, eleven thousand, four hundred ninety-one".