2155726243174 has 24 divisors (see below), whose sum is σ = 3769000584048. Its totient is φ = 922045909680.

The previous prime is 2155726243171. The next prime is 2155726243201. The reversal of 2155726243174 is 4713426275512.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155726243171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21816717 + ... + 21915304.

It is an arithmetic number, because the mean of its divisors is an integer number (157041691002).

Almost surely, 2^{2155726243174} is an apocalyptic number.

2155726243174 is a deficient number, since it is larger than the sum of its proper divisors (1613274340874).

2155726243174 is a wasteful number, since it uses less digits than its factorization.

2155726243174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43732540 (or 43732533 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 49.

The spelling of 2155726243174 in words is "two trillion, one hundred fifty-five billion, seven hundred twenty-six million, two hundred forty-three thousand, one hundred seventy-four".