101816315238 has 128 divisors (see below), whose sum is σ = 246063744000. Its totient is φ = 27721379840.

The previous prime is 101816315191. The next prime is 101816315297. The reversal of 101816315238 is 832513618101.

It is a junction number, because it is equal to n+sod(n) for n = 101816315196 and 101816315205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2878303 + ... + 2913461.

It is an arithmetic number, because the mean of its divisors is an integer number (1922373000).

Almost surely, 2^101816315238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101816315238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123031872000).

101816315238 is an abundant number, since it is smaller than the sum of its proper divisors (144247428762).

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

101816315238 is a wasteful number, since it uses less digits than its factorization.

101816315238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35310.

The product of its (nonzero) digits is 34560, while the sum is 39.

The spelling of 101816315238 in words is "one hundred one billion, eight hundred sixteen million, three hundred fifteen thousand, two hundred thirty-eight".