2101870686823 has 8 divisors (see below), whose sum is σ = 2153196533376. Its totient is φ = 2050547731200.

The previous prime is 2101870686809. The next prime is 2101870686833. The reversal of 2101870686823 is 3286860781012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101870686823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101870686803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 787183 + ... + 2196223.

It is an arithmetic number, because the mean of its divisors is an integer number (269149566672).

Almost surely, 2^{2101870686823} is an apocalyptic number.

2101870686823 is a deficient number, since it is larger than the sum of its proper divisors (51325846553).

2101870686823 is a wasteful number, since it uses less digits than its factorization.

2101870686823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445465.

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 2101870686823 in words is "two trillion, one hundred one billion, eight hundred seventy million, six hundred eighty-six thousand, eight hundred twenty-three".