1023345042455 has 4 divisors (see below), whose sum is σ = 1228014050952. Its totient is φ = 818676033960.

The previous prime is 1023345042409. The next prime is 1023345042521. The reversal of 1023345042455 is 5542405433201.

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

It is a de Polignac number, because none of the positive numbers 2^k-1023345042455 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102334504241 + ... + 102334504250.

It is an arithmetic number, because the mean of its divisors is an integer number (307003512738).

Almost surely, 2^{1023345042455} is an apocalyptic number.

1023345042455 is a deficient number, since it is larger than the sum of its proper divisors (204669008497).

1023345042455 is an equidigital number, since it uses as much as digits as its factorization.

1023345042455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204669008496.

The product of its (nonzero) digits is 288000, while the sum is 38.

The spelling of 1023345042455 in words is "one trillion, twenty-three billion, three hundred forty-five million, forty-two thousand, four hundred fifty-five".