3855616430761 has 4 divisors (see below), whose sum is σ = 3857462108500. Its totient is φ = 3853770753024.

The previous prime is 3855616430689. The next prime is 3855616430767. The reversal of 3855616430761 is 1670346165583.

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 3585554325136 + 270062105625 = 1893556^2 + 519675^2 .

It is a cyclic number.

It is not a de Polignac number, because 3855616430761 - 2²⁵ = 3855582876329 is a prime.

It is a super-2 number, since 2×3855616430761² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3855616430767) 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, 922835736 + ... + 922839913.

It is an arithmetic number, because the mean of its divisors is an integer number (964365527125).

Almost surely, 2^{3855616430761} is an apocalyptic number.

It is an amenable number.

3855616430761 is a deficient number, since it is larger than the sum of its proper divisors (1845677739).

3855616430761 is a wasteful number, since it uses less digits than its factorization.

3855616430761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845677738.

The product of its (nonzero) digits is 10886400, while the sum is 55.

It can be divided in two parts, 3855 and 616430761, that added together give a palindrome (616434616).

The spelling of 3855616430761 in words is "three trillion, eight hundred fifty-five billion, six hundred sixteen million, four hundred thirty thousand, seven hundred sixty-one".