4278028440531 has 8 divisors (see below), whose sum is σ = 5704136310784. Its totient is φ = 2851969765320.

The previous prime is 4278028440503. The next prime is 4278028440551. The reversal of 4278028440531 is 1350448208724.

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

It is not a de Polignac number, because 4278028440531 - 2⁶ = 4278028440467 is a prime.

It is a super-2 number, since 2×4278028440531² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4278028440551) 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, 12095371 + ... + 12444036.

It is an arithmetic number, because the mean of its divisors is an integer number (713017038848).

Almost surely, 2^{4278028440531} is an apocalyptic number.

4278028440531 is a deficient number, since it is larger than the sum of its proper divisors (1426107870253).

4278028440531 is a wasteful number, since it uses less digits than its factorization.

4278028440531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24597521.

The product of its (nonzero) digits is 1720320, while the sum is 48.

The spelling of 4278028440531 in words is "four trillion, two hundred seventy-eight billion, twenty-eight million, four hundred forty thousand, five hundred thirty-one".