97887842011 has 2 divisors, whose sum is σ = 97887842012. Its totient is φ = 97887842010.

The previous prime is 97887841991. The next prime is 97887842027. The reversal of 97887842011 is 11024878879.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97887842011 - 2¹³ = 97887833819 is a prime.

It is a super-2 number, since 2×97887842011² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97887842051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48943921005 + 48943921006.

It is an arithmetic number, because the mean of its divisors is an integer number (48943921006).

Almost surely, 2^97887842011 is an apocalyptic number.

97887842011 is a deficient number, since it is larger than the sum of its proper divisors (1).

97887842011 is an equidigital number, since it uses as much as digits as its factorization.

97887842011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1806336, while the sum is 55.

The spelling of 97887842011 in words is "ninety-seven billion, eight hundred eighty-seven million, eight hundred forty-two thousand, eleven".