2170216836870 has 32 divisors (see below), whose sum is σ = 5237296777440. Its totient is φ = 575527115520.

The previous prime is 2170216836863. The next prime is 2170216836943. The reversal of 2170216836870 is 786386120712.

It is a super-2 number, since 2×2170216836870² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199830375 + ... + 199841234.

It is an arithmetic number, because the mean of its divisors is an integer number (163665524295).

Almost surely, 2^{2170216836870} is an apocalyptic number.

2170216836870 is an abundant number, since it is smaller than the sum of its proper divisors (3067079940570).

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

2170216836870 is a wasteful number, since it uses less digits than its factorization.

2170216836870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399671800.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 2170216836870 in words is "two trillion, one hundred seventy billion, two hundred sixteen million, eight hundred thirty-six thousand, eight hundred seventy".