101666051550502 has 4 divisors (see below), whose sum is σ = 152499077325756. Its totient is φ = 50833025775250.

The previous prime is 101666051550487. The next prime is 101666051550517. The reversal of 101666051550502 is 205055150666101.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (101666051550487) and next prime (101666051550517).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25416512887624 + ... + 25416512887627.

It is an arithmetic number, because the mean of its divisors is an integer number (38124769331439).

Almost surely, 2^{101666051550502} is an apocalyptic number.

101666051550502 is a deficient number, since it is larger than the sum of its proper divisors (50833025775254).

101666051550502 is an equidigital number, since it uses as much as digits as its factorization.

101666051550502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50833025775253.

The product of its (nonzero) digits is 270000, while the sum is 43.

The spelling of 101666051550502 in words is "one hundred one trillion, six hundred sixty-six billion, fifty-one million, five hundred fifty thousand, five hundred two".