40170733745 has 4 divisors (see below), whose sum is σ = 48204880500. Its totient is φ = 32136586992.

The previous prime is 40170733741. The next prime is 40170733783. The reversal of 40170733745 is 54733707104.

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 8040888241 + 32129845504 = 89671^2 + 179248^2 .

It is a cyclic number.

It is not a de Polignac number, because 40170733745 - 2² = 40170733741 is a prime.

It is a super-2 number, since 2×40170733745² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40170733741) 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, 4017073370 + ... + 4017073379.

It is an arithmetic number, because the mean of its divisors is an integer number (12051220125).

Almost surely, 2^40170733745 is an apocalyptic number.

It is an amenable number.

40170733745 is a deficient number, since it is larger than the sum of its proper divisors (8034146755).

40170733745 is an equidigital number, since it uses as much as digits as its factorization.

40170733745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8034146754.

The product of its (nonzero) digits is 246960, while the sum is 41.

The spelling of 40170733745 in words is "forty billion, one hundred seventy million, seven hundred thirty-three thousand, seven hundred forty-five".