4020361342561 has 8 divisors (see below), whose sum is σ = 4118445402624. Its totient is φ = 3922278542880.

The previous prime is 4020361342541. The next prime is 4020361342601. The reversal of 4020361342561 is 1652431630204.

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 4020361342561 - 2²⁵ = 4020327788129 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 4020361342561.

It is not an unprimeable number, because it can be changed into a prime (4020361342541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11314180 + ... + 11664106.

It is an arithmetic number, because the mean of its divisors is an integer number (514805675328).

Almost surely, 2^{4020361342561} is an apocalyptic number.

4020361342561 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4020361342561 is a deficient number, since it is larger than the sum of its proper divisors (98084060063).

4020361342561 is a wasteful number, since it uses less digits than its factorization.

4020361342561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630191.

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 4020361342561 its reverse (1652431630204), we get a palindrome (5672792972765).

The spelling of 4020361342561 in words is "four trillion, twenty billion, three hundred sixty-one million, three hundred forty-two thousand, five hundred sixty-one".