2111571391790 has 96 divisors (see below), whose sum is σ = 4927845250080. Its totient is φ = 645518813184.

The previous prime is 2111571391763. The next prime is 2111571391793. The reversal of 2111571391790 is 971931751112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111571391793) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6512519 + ... + 6829058.

It is an arithmetic number, because the mean of its divisors is an integer number (51331721355).

Almost surely, 2^{2111571391790} is an apocalyptic number.

2111571391790 is an abundant number, since it is smaller than the sum of its proper divisors (2816273858290).

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

2111571391790 is a wasteful number, since it uses less digits than its factorization.

2111571391790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13341634 (or 13341627 counting only the distinct ones).

The product of its (nonzero) digits is 119070, while the sum is 47.

The spelling of 2111571391790 in words is "two trillion, one hundred eleven billion, five hundred seventy-one million, three hundred ninety-one thousand, seven hundred ninety".