101865843870 has 32 divisors (see below), whose sum is σ = 279403458048. Its totient is φ = 23283621408.

The previous prime is 101865843847. The next prime is 101865843881. The reversal of 101865843870 is 78348568101.

It is a happy number.

It is a congruent number.

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, 242537514 + ... + 242537933.

It is an arithmetic number, because the mean of its divisors is an integer number (8731358064).

Almost surely, 2^101865843870 is an apocalyptic number.

101865843870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101865843870 is an abundant number, since it is smaller than the sum of its proper divisors (177537614178).

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

101865843870 is a wasteful number, since it uses less digits than its factorization.

101865843870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485075464.

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 101865843870 in words is "one hundred one billion, eight hundred sixty-five million, eight hundred forty-three thousand, eight hundred seventy".