118640566453 has 2 divisors, whose sum is σ = 118640566454. Its totient is φ = 118640566452.

The previous prime is 118640566427. The next prime is 118640566511. The reversal of 118640566453 is 354665046811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79173578884 + 39466987569 = 281378^2 + 198663^2 .

It is a cyclic number.

It is not a de Polignac number, because 118640566453 - 2¹³ = 118640558261 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 118640566397 and 118640566406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118640566423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59320283226 + 59320283227.

It is an arithmetic number, because the mean of its divisors is an integer number (59320283227).

Almost surely, 2^118640566453 is an apocalyptic number.

It is an amenable number.

118640566453 is a deficient number, since it is larger than the sum of its proper divisors (1).

118640566453 is an equidigital number, since it uses as much as digits as its factorization.

118640566453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2073600, while the sum is 49.

The spelling of 118640566453 in words is "one hundred eighteen billion, six hundred forty million, five hundred sixty-six thousand, four hundred fifty-three".