3945707380265 has 8 divisors (see below), whose sum is σ = 5411255835840. Its totient is φ = 2705627917872.

The previous prime is 3945707380247. The next prime is 3945707380289. The reversal of 3945707380265 is 5620837075493.

It is a happy number.

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 3945707380265 - 2¹⁴ = 3945707363881 is a prime.

It is a super-2 number, since 2×3945707380265² (a number of 26 digits) contains 22 as substring.

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, 56367248255 + ... + 56367248324.

It is an arithmetic number, because the mean of its divisors is an integer number (676406979480).

Almost surely, 2^{3945707380265} is an apocalyptic number.

3945707380265 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3945707380265 is a deficient number, since it is larger than the sum of its proper divisors (1465548455575).

3945707380265 is a wasteful number, since it uses less digits than its factorization.

3945707380265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112734496591.

The product of its (nonzero) digits is 38102400, while the sum is 59.

The spelling of 3945707380265 in words is "three trillion, nine hundred forty-five billion, seven hundred seven million, three hundred eighty thousand, two hundred sixty-five".