102728401740653 has 4 divisors (see below), whose sum is σ = 110630586489948. Its totient is φ = 94826216991360.

The previous prime is 102728401740641. The next prime is 102728401740667. The reversal of 102728401740653 is 356047104827201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8704311394249 + 94024090346404 = 2950307^2 + 9696602^2 .

It is a cyclic number.

It is not a de Polignac number, because 102728401740653 - 2³⁰ = 102727327998829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102728401740353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3951092374628 + ... + 3951092374653.

It is an arithmetic number, because the mean of its divisors is an integer number (27657646622487).

Almost surely, 2^{102728401740653} is an apocalyptic number.

102728401740653 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

102728401740653 is a deficient number, since it is larger than the sum of its proper divisors (7902184749295).

102728401740653 is an equidigital number, since it uses as much as digits as its factorization.

102728401740653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7902184749294.

The product of its (nonzero) digits is 2257920, while the sum is 50.

The spelling of 102728401740653 in words is "one hundred two trillion, seven hundred twenty-eight billion, four hundred one million, seven hundred forty thousand, six hundred fifty-three".