27824728501 has 2 divisors, whose sum is σ = 27824728502. Its totient is φ = 27824728500.

The previous prime is 27824728499. The next prime is 27824728541. The reversal of 27824728501 is 10582742872.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14731647876 + 13093080625 = 121374^2 + 114425^2 .

It is a cyclic number.

It is not a de Polignac number, because 27824728501 - 2¹ = 27824728499 is a prime.

Together with 27824728499, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27824728541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13912364250 + 13912364251.

It is an arithmetic number, because the mean of its divisors is an integer number (13912364251).

Almost surely, 2^27824728501 is an apocalyptic number.

It is an amenable number.

27824728501 is a deficient number, since it is larger than the sum of its proper divisors (1).

27824728501 is an equidigital number, since it uses as much as digits as its factorization.

27824728501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 501760, while the sum is 46.

The spelling of 27824728501 in words is "twenty-seven billion, eight hundred twenty-four million, seven hundred twenty-eight thousand, five hundred one".