2161711516670 has 16 divisors (see below), whose sum is σ = 4016599463808. Its totient is φ = 836791554720.

The previous prime is 2161711516667. The next prime is 2161711516739. The reversal of 2161711516670 is 766151171612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3486631169 + ... + 3486631788.

It is an arithmetic number, because the mean of its divisors is an integer number (251037466488).

Almost surely, 2^{2161711516670} is an apocalyptic number.

2161711516670 is a deficient number, since it is larger than the sum of its proper divisors (1854887947138).

2161711516670 is a wasteful number, since it uses less digits than its factorization.

2161711516670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6973262995.

The product of its (nonzero) digits is 105840, while the sum is 44.

The spelling of 2161711516670 in words is "two trillion, one hundred sixty-one billion, seven hundred eleven million, five hundred sixteen thousand, six hundred seventy".