16455155645 has 4 divisors (see below), whose sum is σ = 19746186780. Its totient is φ = 13164124512.

The previous prime is 16455155641. The next prime is 16455155653. The reversal of 16455155645 is 54655155461.

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 3930412249 + 12524743396 = 62693^2 + 111914^2 .

It is a cyclic number.

It is not a de Polignac number, because 16455155645 - 2² = 16455155641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16455155645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16455155641) 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, 1645515560 + ... + 1645515569.

It is an arithmetic number, because the mean of its divisors is an integer number (4936546695).

Almost surely, 2^16455155645 is an apocalyptic number.

It is an amenable number.

16455155645 is a deficient number, since it is larger than the sum of its proper divisors (3291031135).

16455155645 is an equidigital number, since it uses as much as digits as its factorization.

16455155645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291031134.

The product of its digits is 1800000, while the sum is 47.

The spelling of 16455155645 in words is "sixteen billion, four hundred fifty-five million, one hundred fifty-five thousand, six hundred forty-five".