146640616393 has 2 divisors, whose sum is σ = 146640616394. Its totient is φ = 146640616392.

The previous prime is 146640616321. The next prime is 146640616453. The reversal of 146640616393 is 393616046641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75301945744 + 71338670649 = 274412^2 + 267093^2 .

It is a cyclic number.

It is not a de Polignac number, because 146640616393 - 2¹³ = 146640608201 is a prime.

It is a super-2 number, since 2×146640616393² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (146640416393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73320308196 + 73320308197.

It is an arithmetic number, because the mean of its divisors is an integer number (73320308197).

Almost surely, 2^146640616393 is an apocalyptic number.

It is an amenable number.

146640616393 is a deficient number, since it is larger than the sum of its proper divisors (1).

146640616393 is an equidigital number, since it uses as much as digits as its factorization.

146640616393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 49.

The spelling of 146640616393 in words is "one hundred forty-six billion, six hundred forty million, six hundred sixteen thousand, three hundred ninety-three".