2173072077 has 16 divisors (see below), whose sum is σ = 3512036160. Its totient is φ = 1317013200.

The previous prime is 2173072019. The next prime is 2173072093. The reversal of 2173072077 is 7702703712.

It is not a de Polignac number, because 2173072077 - 2⁷ = 2173071949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173072477) 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, 3658074 + ... + 3658667.

It is an arithmetic number, because the mean of its divisors is an integer number (219502260).

Almost surely, 2^2173072077 is an apocalyptic number.

2173072077 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2173072077 is a deficient number, since it is larger than the sum of its proper divisors (1338964083).

2173072077 is a wasteful number, since it uses less digits than its factorization.

2173072077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7316761 (or 7316755 counting only the distinct ones).

The product of its (nonzero) digits is 28812, while the sum is 36.

The square root of 2173072077 is about 46616.2211788987. The cubic root of 2173072077 is about 1295.2632504481.

Adding to 2173072077 its reverse (7702703712), we get a palindrome (9875775789).

The spelling of 2173072077 in words is "two billion, one hundred seventy-three million, seventy-two thousand, seventy-seven".