102540441604493 has 2 divisors, whose sum is σ = 102540441604494. Its totient is φ = 102540441604492.

The previous prime is 102540441604429. The next prime is 102540441604537. The reversal of 102540441604493 is 394406144045201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78574697592169 + 23965744012324 = 8864237^2 + 4895482^2 .

It is a cyclic number.

It is not a de Polignac number, because 102540441604493 - 2⁶ = 102540441604429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102540441604093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51270220802246 + 51270220802247.

It is an arithmetic number, because the mean of its divisors is an integer number (51270220802247).

Almost surely, 2^{102540441604493} is an apocalyptic number.

It is an amenable number.

102540441604493 is a deficient number, since it is larger than the sum of its proper divisors (1).

102540441604493 is an equidigital number, since it uses as much as digits as its factorization.

102540441604493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1658880, while the sum is 47.

Adding to 102540441604493 its reverse (394406144045201), we get a palindrome (496946585649694).

The spelling of 102540441604493 in words is "one hundred two trillion, five hundred forty billion, four hundred forty-one million, six hundred four thousand, four hundred ninety-three".