445657343438 has 8 divisors (see below), whose sum is σ = 684032201688. Its totient is φ = 217646609544.

The previous prime is 445657343437. The next prime is 445657343471. The reversal of 445657343438 is 834343756544.

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

It is a super-2 number, since 2×445657343438² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445657343431) 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, 2591030981 + ... + 2591031152.

It is an arithmetic number, because the mean of its divisors is an integer number (85504025211).

Almost surely, 2^445657343438 is an apocalyptic number.

445657343438 is a deficient number, since it is larger than the sum of its proper divisors (238374858250).

445657343438 is a wasteful number, since it uses less digits than its factorization.

445657343438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5182062178.

The product of its digits is 58060800, while the sum is 56.

The spelling of 445657343438 in words is "four hundred forty-five billion, six hundred fifty-seven million, three hundred forty-three thousand, four hundred thirty-eight".