2173420722748 has 24 divisors (see below), whose sum is σ = 4152078572544. Its totient is φ = 987246884400.

The previous prime is 2173420722713. The next prime is 2173420722773. The reversal of 2173420722748 is 8472270243712.

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, 16725190 + ... + 16854637.

It is an arithmetic number, because the mean of its divisors is an integer number (173003273856).

Almost surely, 2^{2173420722748} is an apocalyptic number.

It is an amenable number.

2173420722748 is a deficient number, since it is larger than the sum of its proper divisors (1978657849796).

2173420722748 is a wasteful number, since it uses less digits than its factorization.

2173420722748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33581313 (or 33581311 counting only the distinct ones).

The product of its (nonzero) digits is 2107392, while the sum is 49.

The spelling of 2173420722748 in words is "two trillion, one hundred seventy-three billion, four hundred twenty million, seven hundred twenty-two thousand, seven hundred forty-eight".