240277177126243 has 2 divisors, whose sum is σ = 240277177126244. Its totient is φ = 240277177126242.

The previous prime is 240277177126201. The next prime is 240277177126279. The reversal of 240277177126243 is 342621771772042.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240277177126243 is a prime.

It is not a weakly prime, because it can be changed into another prime (240277178126243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120138588563121 + 120138588563122.

It is an arithmetic number, because the mean of its divisors is an integer number (120138588563122).

Almost surely, 2^{240277177126243} is an apocalyptic number.

240277177126243 is a deficient number, since it is larger than the sum of its proper divisors (1).

240277177126243 is an equidigital number, since it uses as much as digits as its factorization.

240277177126243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11063808, while the sum is 55.

The spelling of 240277177126243 in words is "two hundred forty trillion, two hundred seventy-seven billion, one hundred seventy-seven million, one hundred twenty-six thousand, two hundred forty-three".