2171670220773 has 16 divisors (see below), whose sum is σ = 3218165769600. Its totient is φ = 1447385698080.

The previous prime is 2171670220771. The next prime is 2171670220777. The reversal of 2171670220773 is 3770220761712.

2171670220773 is a `hidden beast` number, since 217 + 167 + 0 + 2 + 207 + 73 = 666.

It is not a de Polignac number, because 2171670220773 - 2¹ = 2171670220771 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171670220771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10855968 + ... + 11054201.

It is an arithmetic number, because the mean of its divisors is an integer number (201135360600).

Almost surely, 2^{2171670220773} is an apocalyptic number.

It is an amenable number.

2171670220773 is a deficient number, since it is larger than the sum of its proper divisors (1046495548827).

2171670220773 is a wasteful number, since it uses less digits than its factorization.

2171670220773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21913849 (or 21913843 counting only the distinct ones).

The product of its (nonzero) digits is 345744, while the sum is 45.

The spelling of 2171670220773 in words is "two trillion, one hundred seventy-one billion, six hundred seventy million, two hundred twenty thousand, seven hundred seventy-three".