40443323345672 has 32 divisors (see below), whose sum is σ = 81737513621400. Its totient is φ = 18649438216704.

The previous prime is 40443323345657. The next prime is 40443323345783. The reversal of 40443323345672 is 27654332334404.

It can be written as a sum of positive squares in 4 ways, for example, as 13832850316516 + 26610473029156 = 3719254^2 + 5158534^2 .

It is a super-2 number, since 2×40443323345672² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40443323345672.

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, 173956397 + ... + 174188732.

Almost surely, 2^{40443323345672} is an apocalyptic number.

It is an amenable number.

40443323345672 is an abundant number, since it is smaller than the sum of its proper divisors (41294190275728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40443323345672 is a wasteful number, since it uses less digits than its factorization.

40443323345672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348146265 (or 348146261 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 50.

The spelling of 40443323345672 in words is "forty trillion, four hundred forty-three billion, three hundred twenty-three million, three hundred forty-five thousand, six hundred seventy-two".