28137955943 has 8 divisors (see below), whose sum is σ = 29843895312. Its totient is φ = 26437657216.

The previous prime is 28137955919. The next prime is 28137955973. The reversal of 28137955943 is 34955973182.

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

It is a cyclic number.

It is not a de Polignac number, because 28137955943 - 2¹² = 28137951847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28137955973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1399880 + ... + 1419837.

It is an arithmetic number, because the mean of its divisors is an integer number (3730486914).

Almost surely, 2^28137955943 is an apocalyptic number.

28137955943 is a deficient number, since it is larger than the sum of its proper divisors (1705939369).

28137955943 is a wasteful number, since it uses less digits than its factorization.

28137955943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2820321.

The product of its digits is 8164800, while the sum is 56.

The spelling of 28137955943 in words is "twenty-eight billion, one hundred thirty-seven million, nine hundred fifty-five thousand, nine hundred forty-three".