2167170201556 has 24 divisors (see below), whose sum is σ = 3964546252800. Its totient is φ = 1034611867872.

The previous prime is 2167170201517. The next prime is 2167170201557. The reversal of 2167170201556 is 6551020717612.

It is a super-2 number, since 2×2167170201556² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2167170201557) 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, 21094356 + ... + 21196843.

It is an arithmetic number, because the mean of its divisors is an integer number (165189427200).

Almost surely, 2^{2167170201556} is an apocalyptic number.

It is an amenable number.

2167170201556 is a deficient number, since it is larger than the sum of its proper divisors (1797376051244).

2167170201556 is a wasteful number, since it uses less digits than its factorization.

2167170201556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42291783 (or 42291781 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 43.

The spelling of 2167170201556 in words is "two trillion, one hundred sixty-seven billion, one hundred seventy million, two hundred one thousand, five hundred fifty-six".