208457453645 has 8 divisors (see below), whose sum is σ = 285884507904. Its totient is φ = 142942253904.

The previous prime is 208457453563. The next prime is 208457453657. The reversal of 208457453645 is 546354754802.

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 208457453645 - 2¹⁴ = 208457437261 is a prime.

It is a super-3 number, since 3×208457453645³ (a number of 35 digits) contains 333 as substring.

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 7 ways as a sum of consecutive naturals, for example, 2977963589 + ... + 2977963658.

It is an arithmetic number, because the mean of its divisors is an integer number (35735563488).

Almost surely, 2^208457453645 is an apocalyptic number.

It is an amenable number.

208457453645 is a deficient number, since it is larger than the sum of its proper divisors (77427054259).

208457453645 is an equidigital number, since it uses as much as digits as its factorization.

208457453645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5955927259.

The product of its (nonzero) digits is 16128000, while the sum is 53.

The spelling of 208457453645 in words is "two hundred eight billion, four hundred fifty-seven million, four hundred fifty-three thousand, six hundred forty-five".