101666451011 has 2 divisors, whose sum is σ = 101666451012. Its totient is φ = 101666451010.

The previous prime is 101666451001. The next prime is 101666451037. The reversal of 101666451011 is 110154666101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101666451011 - 2³⁰ = 100592709187 is a prime.

It is a super-2 number, since 2×101666451011² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101666451001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50833225505 + 50833225506.

It is an arithmetic number, because the mean of its divisors is an integer number (50833225506).

Almost surely, 2^101666451011 is an apocalyptic number.

101666451011 is a deficient number, since it is larger than the sum of its proper divisors (1).

101666451011 is an equidigital number, since it uses as much as digits as its factorization.

101666451011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 32.

The spelling of 101666451011 in words is "one hundred one billion, six hundred sixty-six million, four hundred fifty-one thousand, eleven".