240164939489557 has 2 divisors, whose sum is σ = 240164939489558. Its totient is φ = 240164939489556.

The previous prime is 240164939489551. The next prime is 240164939489561. The reversal of 240164939489557 is 755984939461042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238833255801361 + 1331683688196 = 15454231^2 + 1153986^2 .

It is a cyclic number.

It is not a de Polignac number, because 240164939489557 - 2³¹ = 240162792005909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240164939489551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120082469744778 + 120082469744779.

It is an arithmetic number, because the mean of its divisors is an integer number (120082469744779).

It is a 1-persistent number, because it is pandigital, but 2⋅240164939489557 = 480329878979114 is not.

Almost surely, 2^{240164939489557} is an apocalyptic number.

It is an amenable number.

240164939489557 is a deficient number, since it is larger than the sum of its proper divisors (1).

240164939489557 is an equidigital number, since it uses as much as digits as its factorization.

240164939489557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2351462400, while the sum is 76.

The spelling of 240164939489557 in words is "two hundred forty trillion, one hundred sixty-four billion, nine hundred thirty-nine million, four hundred eighty-nine thousand, five hundred fifty-seven".