2145516663455 has 8 divisors (see below), whose sum is σ = 2808676359504. Its totient is φ = 1560375755200.

The previous prime is 2145516663431. The next prime is 2145516663461. The reversal of 2145516663455 is 5543666155412.

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

It is not a de Polignac number, because 2145516663455 - 2²⁴ = 2145499886239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2145516663397 and 2145516663406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19504696886 + ... + 19504696995.

It is an arithmetic number, because the mean of its divisors is an integer number (351084544938).

Almost surely, 2^{2145516663455} is an apocalyptic number.

2145516663455 is a deficient number, since it is larger than the sum of its proper divisors (663159696049).

2145516663455 is a wasteful number, since it uses less digits than its factorization.

2145516663455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39009393897.

The product of its digits is 12960000, while the sum is 53.

The spelling of 2145516663455 in words is "two trillion, one hundred forty-five billion, five hundred sixteen million, six hundred sixty-three thousand, four hundred fifty-five".