21876274601 has 2 divisors, whose sum is σ = 21876274602. Its totient is φ = 21876274600.

The previous prime is 21876274583. The next prime is 21876274627. The reversal of 21876274601 is 10647267812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13024287376 + 8851987225 = 114124^2 + 94085^2 .

It is a cyclic number.

It is not a de Polignac number, because 21876274601 - 2²² = 21872080297 is a prime.

It is not a weakly prime, because it can be changed into another prime (21876274631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10938137300 + 10938137301.

It is an arithmetic number, because the mean of its divisors is an integer number (10938137301).

Almost surely, 2^21876274601 is an apocalyptic number.

It is an amenable number.

21876274601 is a deficient number, since it is larger than the sum of its proper divisors (1).

21876274601 is an equidigital number, since it uses as much as digits as its factorization.

21876274601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 44.

The spelling of 21876274601 in words is "twenty-one billion, eight hundred seventy-six million, two hundred seventy-four thousand, six hundred one".