101666150111550 has 72 divisors (see below), whose sum is σ = 256333125234888. Its totient is φ = 26666531030400.

The previous prime is 101666150111509. The next prime is 101666150111557. The reversal of 101666150111550 is 55111051666101.

It is a junction number, because it is equal to n+sod(n) for n = 101666150111499 and 101666150111508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101666150111557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 90516069 + ... + 91632368.

It is an arithmetic number, because the mean of its divisors is an integer number (3560182294929).

Almost surely, 2^{101666150111550} is an apocalyptic number.

101666150111550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101666150111550 is an abundant number, since it is smaller than the sum of its proper divisors (154666975123338).

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

101666150111550 is a wasteful number, since it uses less digits than its factorization.

101666150111550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182148574 (or 182148508 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 39.

The spelling of 101666150111550 in words is "one hundred one trillion, six hundred sixty-six billion, one hundred fifty million, one hundred eleven thousand, five hundred fifty".