3888562538661 has 32 divisors (see below), whose sum is σ = 5323866144768. Its totient is φ = 2523422448960.

The previous prime is 3888562538639. The next prime is 3888562538669. The reversal of 3888562538661 is 1668352658883.

It is not a de Polignac number, because 3888562538661 - 2²³ = 3888554150053 is a prime.

It is a super-2 number, since 2×3888562538661² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3888562538669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169034386 + ... + 169057388.

It is an arithmetic number, because the mean of its divisors is an integer number (166370817024).

Almost surely, 2^{3888562538661} is an apocalyptic number.

It is an amenable number.

3888562538661 is a deficient number, since it is larger than the sum of its proper divisors (1435303606107).

3888562538661 is a wasteful number, since it uses less digits than its factorization.

3888562538661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29521.

The product of its digits is 398131200, while the sum is 69.

The spelling of 3888562538661 in words is "three trillion, eight hundred eighty-eight billion, five hundred sixty-two million, five hundred thirty-eight thousand, six hundred sixty-one".