102745820393 has 4 divisors (see below), whose sum is σ = 106060201728. Its totient is φ = 99431439060.

The previous prime is 102745820381. The next prime is 102745820399. The reversal of 102745820393 is 393028547201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102745820393 - 2⁶ = 102745820329 is a prime.

It is a super-2 number, since 2×102745820393² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102745820399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1657190621 + ... + 1657190682.

It is an arithmetic number, because the mean of its divisors is an integer number (26515050432).

Almost surely, 2^102745820393 is an apocalyptic number.

It is an amenable number.

102745820393 is a deficient number, since it is larger than the sum of its proper divisors (3314381335).

102745820393 is an equidigital number, since it uses as much as digits as its factorization.

102745820393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3314381334.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 102745820393 in words is "one hundred two billion, seven hundred forty-five million, eight hundred twenty thousand, three hundred ninety-three".