101666051550500 has 48 divisors (see below), whose sum is σ = 222113596932864. Its totient is φ = 40652695282400.

The previous prime is 101666051550487. The next prime is 101666051550517. The reversal of 101666051550500 is 5055150666101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32830364 + ... + 35793363.

It is an arithmetic number, because the mean of its divisors is an integer number (4627366602768).

Almost surely, 2^{101666051550500} is an apocalyptic number.

101666051550500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101666051550500 is an abundant number, since it is smaller than the sum of its proper divisors (120447545382364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101666051550500 is a wasteful number, since it uses less digits than its factorization.

101666051550500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68626709 (or 68626697 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 101666051550500 in words is "one hundred one trillion, six hundred sixty-six billion, fifty-one million, five hundred fifty thousand, five hundred".