43390661707 has 4 divisors (see below), whose sum is σ = 45277212240. Its totient is φ = 41504111176.

The previous prime is 43390661701. The next prime is 43390661729. The reversal of 43390661707 is 70716609334.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43390661707 - 2¹⁹ = 43390137419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43390661701) 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, 943275232 + ... + 943275277.

It is an arithmetic number, because the mean of its divisors is an integer number (11319303060).

Almost surely, 2^43390661707 is an apocalyptic number.

43390661707 is a deficient number, since it is larger than the sum of its proper divisors (1886550533).

43390661707 is a wasteful number, since it uses less digits than its factorization.

43390661707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886550532.

The product of its (nonzero) digits is 571536, while the sum is 46.

The spelling of 43390661707 in words is "forty-three billion, three hundred ninety million, six hundred sixty-one thousand, seven hundred seven".