28376557649113 has 4 divisors (see below), whose sum is σ = 28415590053760. Its totient is φ = 28337525244468.

The previous prime is 28376557649101. The next prime is 28376557649149. The reversal of 28376557649113 is 31194675567382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28376557649113 - 2¹⁷ = 28376557518041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28376557649513) 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, 19516201233 + ... + 19516202686.

It is an arithmetic number, because the mean of its divisors is an integer number (7103897513440).

Almost surely, 2^{28376557649113} is an apocalyptic number.

It is an amenable number.

28376557649113 is a deficient number, since it is larger than the sum of its proper divisors (39032404647).

28376557649113 is an equidigital number, since it uses as much as digits as its factorization.

28376557649113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39032404646.

The product of its digits is 228614400, while the sum is 67.

The spelling of 28376557649113 in words is "twenty-eight trillion, three hundred seventy-six billion, five hundred fifty-seven million, six hundred forty-nine thousand, one hundred thirteen".