3651045534621 has 12 divisors (see below), whose sum is σ = 5273876043072. Its totient is φ = 2433964077576.

The previous prime is 3651045534601. The next prime is 3651045534701. The reversal of 3651045534621 is 1264355401563.

It is a happy number.

3651045534621 is a `hidden beast` number, since 3 + 6 + 5 + 10 + 4 + 5 + 5 + 3 + 4 + 621 = 666.

3651045534621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3651045534621 - 2²¹ = 3651043437469 is a prime.

It is a super-2 number, since 2×3651045534621² (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 (3651045534601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5173191 + ... + 5836436.

It is an arithmetic number, because the mean of its divisors is an integer number (439489670256).

Almost surely, 2^{3651045534621} is an apocalyptic number.

It is an amenable number.

3651045534621 is a deficient number, since it is larger than the sum of its proper divisors (1622830508451).

3651045534621 is a wasteful number, since it uses less digits than its factorization.

3651045534621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11046480 (or 11046477 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

The spelling of 3651045534621 in words is "three trillion, six hundred fifty-one billion, forty-five million, five hundred thirty-four thousand, six hundred twenty-one".