28427143652031 has 4 divisors (see below), whose sum is σ = 37902858202712. Its totient is φ = 18951429101352.

The previous prime is 28427143652009. The next prime is 28427143652057. The reversal of 28427143652031 is 13025634172482.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 28427143652031 - 2¹⁰ = 28427143651007 is a prime.

It is a super-2 number, since 2×28427143652031² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28427148652031) 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, 4737857275336 + ... + 4737857275341.

It is an arithmetic number, because the mean of its divisors is an integer number (9475714550678).

Almost surely, 2^{28427143652031} is an apocalyptic number.

28427143652031 is a deficient number, since it is larger than the sum of its proper divisors (9475714550681).

28427143652031 is an equidigital number, since it uses as much as digits as its factorization.

28427143652031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9475714550680.

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 28427143652031 in words is "twenty-eight trillion, four hundred twenty-seven billion, one hundred forty-three million, six hundred fifty-two thousand, thirty-one".