21377875151 has 2 divisors, whose sum is σ = 21377875152. Its totient is φ = 21377875150.

The previous prime is 21377875087. The next prime is 21377875171. The reversal of 21377875151 is 15157877312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21377875151 - 2⁶ = 21377875087 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21377875096 and 21377875105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21377875171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10688937575 + 10688937576.

It is an arithmetic number, because the mean of its divisors is an integer number (10688937576).

Almost surely, 2^21377875151 is an apocalyptic number.

21377875151 is a deficient number, since it is larger than the sum of its proper divisors (1).

21377875151 is an equidigital number, since it uses as much as digits as its factorization.

21377875151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 411600, while the sum is 47.

The spelling of 21377875151 in words is "twenty-one billion, three hundred seventy-seven million, eight hundred seventy-five thousand, one hundred fifty-one".