21076160971 has 2 divisors, whose sum is σ = 21076160972. Its totient is φ = 21076160970.

The previous prime is 21076160939. The next prime is 21076160981. The reversal of 21076160971 is 17906167012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21076160971 - 2⁵ = 21076160939 is a prime.

It is a super-2 number, since 2×21076160971² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21076160981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10538080485 + 10538080486.

It is an arithmetic number, because the mean of its divisors is an integer number (10538080486).

Almost surely, 2^21076160971 is an apocalyptic number.

21076160971 is a deficient number, since it is larger than the sum of its proper divisors (1).

21076160971 is an equidigital number, since it uses as much as digits as its factorization.

21076160971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 40.

The spelling of 21076160971 in words is "twenty-one billion, seventy-six million, one hundred sixty thousand, nine hundred seventy-one".