1645113752455 has 8 divisors (see below), whose sum is σ = 2016139407552. Its totient is φ = 1288089065568.

The previous prime is 1645113752423. The next prime is 1645113752459. The reversal of 1645113752455 is 5542573115461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1645113752455 - 2⁵ = 1645113752423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1645113752399 and 1645113752408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645113752459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3500241792 + ... + 3500242261.

It is an arithmetic number, because the mean of its divisors is an integer number (252017425944).

Almost surely, 2^{1645113752455} is an apocalyptic number.

1645113752455 is a deficient number, since it is larger than the sum of its proper divisors (371025655097).

1645113752455 is an equidigital number, since it uses as much as digits as its factorization.

1645113752455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7000484105.

The product of its digits is 2520000, while the sum is 49.

The spelling of 1645113752455 in words is "one trillion, six hundred forty-five billion, one hundred thirteen million, seven hundred fifty-two thousand, four hundred fifty-five".