101685853620 has 72 divisors (see below), whose sum is σ = 332173796136. Its totient is φ = 25030363392.

The previous prime is 101685853597. The next prime is 101685853631. The reversal of 101685853620 is 26358586101.

101685853620 is a `hidden beast` number, since 1 + 0 + 1 + 6 + 8 + 585 + 3 + 62 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12894965136 + 88790888484 = 113556^2 + 297978^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21725407 + ... + 21730086.

Almost surely, 2^101685853620 is an apocalyptic number.

101685853620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101685853620 is an abundant number, since it is smaller than the sum of its proper divisors (230487942516).

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

101685853620 is a wasteful number, since it uses less digits than its factorization.

101685853620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43455521 (or 43455516 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 101685853620 in words is "one hundred one billion, six hundred eighty-five million, eight hundred fifty-three thousand, six hundred twenty".