21769026841151 has 2 divisors, whose sum is σ = 21769026841152. Its totient is φ = 21769026841150.

The previous prime is 21769026841061. The next prime is 21769026841157. The reversal of 21769026841151 is 15114862096712.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21769026841151 - 2¹⁸ = 21769026579007 is a prime.

It is a super-2 number, since 2×21769026841151² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21769026841093 and 21769026841102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21769026841157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10884513420575 + 10884513420576.

It is an arithmetic number, because the mean of its divisors is an integer number (10884513420576).

Almost surely, 2^{21769026841151} is an apocalyptic number.

21769026841151 is a deficient number, since it is larger than the sum of its proper divisors (1).

21769026841151 is an equidigital number, since it uses as much as digits as its factorization.

21769026841151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The spelling of 21769026841151 in words is "twenty-one trillion, seven hundred sixty-nine billion, twenty-six million, eight hundred forty-one thousand, one hundred fifty-one".