3545655106081 has 27 divisors (see below), whose sum is σ = 3954595084657. Its totient is φ = 3176605817000.

The previous prime is 3545655106073. The next prime is 3545655106117. The reversal of 3545655106081 is 1806015565453.

It is a happy number.

The square root of 3545655106081 is 1882991.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 3545655106081 - 2³ = 3545655106073 is a prime.

It is a super-2 number, since 2×3545655106081² (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 (3545652106081) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1470614766 + ... + 1470617176.

Almost surely, 2^{3545655106081} is an apocalyptic number.

3545655106081 is the 1882991-st square number.

3545655106081 is the 941496-th centered octagonal number.

It is an amenable number.

3545655106081 is a deficient number, since it is larger than the sum of its proper divisors (408939978576).

3545655106081 is an frugal number, since it uses more digits than its factorization.

3545655106081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4986 (or 2493 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 49.

Multiplying 3545655106081 by its sum of digits (49), we get a square (173737100197969 = 13180937²).

The spelling of 3545655106081 in words is "three trillion, five hundred forty-five billion, six hundred fifty-five million, one hundred six thousand, eighty-one".