4156765243601 has 4 divisors (see below), whose sum is σ = 4156772704692. Its totient is φ = 4156757782512.

The previous prime is 4156765243583. The next prime is 4156765243627. The reversal of 4156765243601 is 1063425676514.

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 1527389487376 + 2629375756225 = 1235876^2 + 1621535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4156765243601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4156765243601.

It is not an unprimeable number, because it can be changed into a prime (4156765243681) 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, 2820926 + ... + 4033751.

It is an arithmetic number, because the mean of its divisors is an integer number (1039193176173).

Almost surely, 2^{4156765243601} is an apocalyptic number.

It is an amenable number.

4156765243601 is a deficient number, since it is larger than the sum of its proper divisors (7461091).

4156765243601 is an equidigital number, since it uses as much as digits as its factorization.

4156765243601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7461090.

The product of its (nonzero) digits is 3628800, while the sum is 50.

The spelling of 4156765243601 in words is "four trillion, one hundred fifty-six billion, seven hundred sixty-five million, two hundred forty-three thousand, six hundred one".