240002621656877 has 2 divisors, whose sum is σ = 240002621656878. Its totient is φ = 240002621656876.

The previous prime is 240002621656873. The next prime is 240002621656921. The reversal of 240002621656877 is 778656126200042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139564122003076 + 100438499653801 = 11813726^2 + 10021901^2 .

It is a cyclic number.

It is not a de Polignac number, because 240002621656877 - 2² = 240002621656873 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240002621656873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120001310828438 + 120001310828439.

It is an arithmetic number, because the mean of its divisors is an integer number (120001310828439).

Almost surely, 2^{240002621656877} is an apocalyptic number.

It is an amenable number.

240002621656877 is a deficient number, since it is larger than the sum of its proper divisors (1).

240002621656877 is an equidigital number, since it uses as much as digits as its factorization.

240002621656877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13547520, while the sum is 56.

The spelling of 240002621656877 in words is "two hundred forty trillion, two billion, six hundred twenty-one million, six hundred fifty-six thousand, eight hundred seventy-seven".