240321281997877 has 2 divisors, whose sum is σ = 240321281997878. Its totient is φ = 240321281997876.

The previous prime is 240321281997821. The next prime is 240321281997941. The reversal of 240321281997877 is 778799182123042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145398233818161 + 94923048179716 = 12058119^2 + 9742846^2 .

It is a cyclic number.

It is not a de Polignac number, because 240321281997877 - 2²³ = 240321273609269 is a prime.

It is a super-2 number, since 2×240321281997877² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240321281991877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120160640998938 + 120160640998939.

It is an arithmetic number, because the mean of its divisors is an integer number (120160640998939).

Almost surely, 2^{240321281997877} is an apocalyptic number.

It is an amenable number.

240321281997877 is a deficient number, since it is larger than the sum of its proper divisors (1).

240321281997877 is an equidigital number, since it uses as much as digits as its factorization.

240321281997877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 170698752, while the sum is 70.

The spelling of 240321281997877 in words is "two hundred forty trillion, three hundred twenty-one billion, two hundred eighty-one million, nine hundred ninety-seven thousand, eight hundred seventy-seven".