3865010543505 has 48 divisors (see below), whose sum is σ = 6803706574080. Its totient is φ = 2029380148224.

The previous prime is 3865010543491. The next prime is 3865010543509. The reversal of 3865010543505 is 5053450105683.

3865010543505 is a `hidden beast` number, since 3 + 8 + 6 + 50 + 1 + 0 + 543 + 50 + 5 = 666.

It is not a de Polignac number, because 3865010543505 - 2⁴ = 3865010543489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (3865010543509) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 332992 + ... + 2800161.

It is an arithmetic number, because the mean of its divisors is an integer number (141743886960).

Almost surely, 2^{3865010543505} is an apocalyptic number.

It is an amenable number.

3865010543505 is a deficient number, since it is larger than the sum of its proper divisors (2938696030575).

3865010543505 is a wasteful number, since it uses less digits than its factorization.

3865010543505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3133590 (or 3133587 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 45.

The spelling of 3865010543505 in words is "three trillion, eight hundred sixty-five billion, ten million, five hundred forty-three thousand, five hundred five".