2071172556111 has 8 divisors (see below), whose sum is σ = 2761579689904. Its totient is φ = 1380773563200.

The previous prime is 2071172556083. The next prime is 2071172556149. The reversal of 2071172556111 is 1116552711702.

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

It is not a de Polignac number, because 2071172556111 - 2¹⁹ = 2071172031823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2071172556111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2071172556511) 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, 1414540 + ... + 2478561.

It is an arithmetic number, because the mean of its divisors is an integer number (345197461238).

Almost surely, 2^{2071172556111} is an apocalyptic number.

2071172556111 is a deficient number, since it is larger than the sum of its proper divisors (690407133793).

2071172556111 is a wasteful number, since it uses less digits than its factorization.

2071172556111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070441.

The product of its (nonzero) digits is 29400, while the sum is 39.

The spelling of 2071172556111 in words is "two trillion, seventy-one billion, one hundred seventy-two million, five hundred fifty-six thousand, one hundred eleven".