101666051550487 has 2 divisors, whose sum is σ = 101666051550488. Its totient is φ = 101666051550486.

The previous prime is 101666051550463. The next prime is 101666051550517. The reversal of 101666051550487 is 784055150666101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101666051550487 - 2⁴³ = 92869958528279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101666051550787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50833025775243 + 50833025775244.

It is an arithmetic number, because the mean of its divisors is an integer number (50833025775244).

Almost surely, 2^{101666051550487} is an apocalyptic number.

101666051550487 is a deficient number, since it is larger than the sum of its proper divisors (1).

101666051550487 is an equidigital number, since it uses as much as digits as its factorization.

101666051550487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048000, while the sum is 55.

The spelling of 101666051550487 in words is "one hundred one trillion, six hundred sixty-six billion, fifty-one million, five hundred fifty thousand, four hundred eighty-seven".