101864821086 has 24 divisors (see below), whose sum is σ = 252236700144. Its totient is φ = 29104234560.

The previous prime is 101864821081. The next prime is 101864821103. The reversal of 101864821086 is 680128468101.

101864821086 is a `hidden beast` number, since 1 + 0 + 1 + 86 + 482 + 10 + 86 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101864821081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 404225355 + ... + 404225606.

It is an arithmetic number, because the mean of its divisors is an integer number (10509862506).

Almost surely, 2^101864821086 is an apocalyptic number.

101864821086 is an abundant number, since it is smaller than the sum of its proper divisors (150371879058).

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

101864821086 is a wasteful number, since it uses less digits than its factorization.

101864821086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808450976 (or 808450973 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The spelling of 101864821086 in words is "one hundred one billion, eight hundred sixty-four million, eight hundred twenty-one thousand, eighty-six".