2116571605701 has 8 divisors (see below), whose sum is σ = 3225251970624. Its totient is φ = 1209469488960.

The previous prime is 2116571605663. The next prime is 2116571605763. The reversal of 2116571605701 is 1075061756112.

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

It is not a de Polignac number, because 2116571605701 - 2⁷ = 2116571605573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116571600701) 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, 50394562020 + ... + 50394562061.

It is an arithmetic number, because the mean of its divisors is an integer number (403156496328).

Almost surely, 2^{2116571605701} is an apocalyptic number.

2116571605701 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2116571605701 is a deficient number, since it is larger than the sum of its proper divisors (1108680364923).

2116571605701 is a wasteful number, since it uses less digits than its factorization.

2116571605701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100789124091.

The product of its (nonzero) digits is 88200, while the sum is 42.

It can be divided in two parts, 2116571 and 605701, that added together give a palindrome (2722272).

The spelling of 2116571605701 in words is "two trillion, one hundred sixteen billion, five hundred seventy-one million, six hundred five thousand, seven hundred one".