3661220302533 has 48 divisors (see below), whose sum is σ = 5629539801600. Its totient is φ = 2284922068992.

The previous prime is 3661220302529. The next prime is 3661220302577. The reversal of 3661220302533 is 3352030221663.

3661220302533 is a `hidden beast` number, since 3 + 6 + 612 + 2 + 0 + 3 + 0 + 2 + 5 + 33 = 666.

It is not a de Polignac number, because 3661220302533 - 2² = 3661220302529 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3661220302583) 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, 307066110 + ... + 307078032.

It is an arithmetic number, because the mean of its divisors is an integer number (117282079200).

Almost surely, 2^{3661220302533} is an apocalyptic number.

It is an amenable number.

3661220302533 is a deficient number, since it is larger than the sum of its proper divisors (1968319499067).

3661220302533 is a wasteful number, since it uses less digits than its factorization.

3661220302533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22538 (or 22535 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 36.

The spelling of 3661220302533 in words is "three trillion, six hundred sixty-one billion, two hundred twenty million, three hundred two thousand, five hundred thirty-three".